NSTrackingSeparatorToolbarItem adds a white band over the top of the leading split view panes when in full screen mode on macOS 27 [beta 3]. That white band appears to have the height of the toolbar.
macOS 27 developer beta 5 (26A5406e) introduces a bug that causes a white bar to appear over window content if the window’s toolbar has an NSTrackingSeparatorToolbarItem. I filed FB24266969 with Apple describing this.
Also screwed up in AppKit, with the macOS 27 beta 5 release.
Also, the titlebarSeparatorStyle setting seems to be ignored. Toolbars in beta 5 always have a separator line and a blurred slightly lighter background.
Weirdly enough Apple’s own apps don’t have these issues.
In macOS 27 developer beta 5, search fields in toolbars (NSSearchToolbarItem instances) have their placeholder text, search strings, and magnifying glass icons vertically off-center. I reported this as FB24286690.
Beta 6 also fixes the UI issues with NSSearchToolbarItem. Elements are now re-aligned again, the recents menu is in a good position, and the focus ring is perfectly outlining the entire bounds. :D
The toolbar id creates a stable customization domain, and each item id gives the framework something stable to persist when the user adds, removes, or reorders controls. This identifiability of toolbar items is a requirement for customization. Under the hood, when SwiftUI inevitably bridges your toolbar contents to NSToolbar, these identifiers will be directly translated to the NSToolbarItem’s itemIdentifiers.
As we continue the migration to a customizable toolbar, we are likely to encounter a few surprises related to this model.
[…]
After a closer inspection, and perhaps a few minutes of digging through the documentation, we come to the bleak realization: there is no customizable ToolbarItemGroup API.
[…]
The regular toolbar model and the customizable toolbar model overlap, but they are not interchangeable. You cannot give a ToolbarItemGroup an id, and you cannot place one directly inside toolbar(id:content:).
Let’s take a look at another example. This one is a bit tricky, because on macOS, you will get Action 1 in the top trailing position and the whole group of actions centered in the navigation bar. On iOS, you will get Action 1 pinned to trailing and all other items collapsed.
[…]
The final addition to the Toolbar API is the toolbarMinimizeBehavior view modifier allowing us to minimize toolbars while scrolling up or down. You can minimize tab, bottom, window and navigation bars with it.
With new modifiers SwiftUI gives us a much better balance between system-driven adaptation and explicit control. We can now decide which actions are more important, which items should always stay visible, which groups should intentionally live in the overflow menu, and how toolbars should react to scrolling.
As those new models start shipping on 22 September, the window for the first public release of Golden Gate has narrowed to 15-22 September, with greatest likelihood on the same day as the arrival of those new Macs.
[…]
At the same time as the release of Golden Gate, we should get Tahoe 26.7 and Sequoia 15.8, but it looks increasingly likely that the final version of Sonoma has been 14.8.9, released on 6 August.
As we prepare to flee from the visual horrors of macOS Tahoe at last, this article is a reminder that it wasn’t the first major release of macOS that has had blatant bugs in its interface, although I suspect it may be unique in that those were intentional. While progress in Golden Gate has been limited, I hope you’ll find it rectifies some of the worst errors of Liquid Glass.
Many Macs will be left behind, as Golden Gate drops support for Intel.
Normally, I update around January. With Tahoe I waited until July. This time, I’m considering updating to Golden Gate soon after its release. The downside is that Xcode 26 doesn’t run on Golden Gate, so I would have to drop support for many older macOS versions (about 3% of my customers’ Macs). But it seems like Apple’s going to force that soon, anyway, as one of the next Xcode 27 updates will likely drop support for Tahoe. I want to get off Xcode 26, both to use the newer SDK and because there are various debugging/testing things that don’t work properly.
I am working on a new app. Right now, I am targeting back to macOS Sequoia. I think that would be a good OS to target but becoming quite old with Golden Gate just around the corner. […] I wonder if I should just target macOS Golden Gate and focus testing on that.
i’m in the exact same boat. i’d really like to stay on macOS 15 and whatever Xcode works there. it means i can still build things in the old UI and mostly Tahoe and GG respect it.
but recent bug reports from beta testers and the inability to see these bugs on my VM has made me feel very stuck here — like apple has purposefully made it difficult to move forward and support older versions too.
I don’t appreciate being forced by Xcode 27 to drop support for macOS 10.13-11.0. It’s my decision which OSes I want to support, not Apple’s. Yes, I can keep Xcode 26 around until submissions require Xcode 27, but what then?
Originally, Xcode 27 was documented as supporting Big Sur on Intel Macs, but now the earliest is Monterey.
I’m frustrated, too, but it’s more honest than the recent releases that claimed to support deployment on older macOS versions when Apple clearly hadn’t tested that it actually worked. I filed bugs, and Apple kept responding that they’d fixed it, when they hadn’t.
Using old versions of Xcode isn’t a great solution because they aren’t supported on Golden Gate. Swift also makes it more difficult to call newer APIs when using an older SDK. You can’t just copy/paste a method prototype or constant value and conditionally use it when running on a newer OS.
I eventually found a hidden workaround that changes the errors back into warnings. That is good news, but it does not make the concern disappear. The setting is undocumented, absent from the normal Xcode interface, and currently being tested only in a beta toolchain. The larger question is what Apple intends to enforce when Xcode 27 is final and, later, when App Store submission requirements move to its SDKs.
[…]
Apple’s current Xcode system requirements list Xcode 26 with deployment targets beginning at iOS 15 and macOS 11. Yet developers have been able to enter older targets manually. In an Apple Developer Forums discussion about Xcode 26, an Apple product manager explained that the published deployment target range is aligned with simulator support and on-device debugging. The accepted answer confirms that an iOS 13 target can still build even though it falls below the range in Apple’s table.
My own tests went further. Xcode 26.5 compiled a project targeting iOS 9.0. It warned that the target was older than the supported range, but the build succeeded. On macOS, I have compiled current apps with deployment targets as old as macOS 10.9. Xcode warned me, but it still produced working applications.
[…]
For iOS and iPadOS, staying on Xcode 26 is not a lasting option. Apple has repeatedly made a current Xcode and SDK mandatory for new App Store submissions. […] If any one of those conditions fails, iOS and iPadOS developers will have no normal App Store path for publishing new updates that still support versions older than 15.
Just want to remind you guys that if you move to Xcode 27, the only “officially” supported and sanction Xcode for GG, UIDesignRequiresCompatibility is no longer respected across the 27 OSes (apps built with older Xcodes still are). So you might suddenly find out you have a lot of work ahead of you, adding support for the dreaded Glass. And 27 Glass is not the same as 26 Glass. That can be an issue if you skipped 26 altogether but still want to support it.
I mostly ignored the Xcode 27 betas (mainly due to the barely-usable Device Hub) so I didn’t realize the passive-aggressive prompts to drop support for iOS < 15 that you get when submitting apps is being backed up by Xcode 27 refusing to compile apps at all unless you bump the deployment target 😧
Apple has issued the 8th beta version of MacOS 27 Golden Gate to users participating in the developer beta testing program. Typically the matching build arrives as a public beta soon after, so if you’re on that beta track keep an eye out for an update soon too. MacOS 27 Golden Gate is nearing completion, ... Read More
Apple has released the seventh beta version of macOS 27 Golden Gate to users who are running the developer beta. A matching build typically arrives for public beta testers soon after. Any user can install MacOS 27 Golden Gate beta onto a compatible Mac, though beta system software is generally only recommended for advanced users ... Read More
Exchange Web Services (EWS) is approaching end of service in Exchange Online. We first announced this change was coming in 2018, when we announced that Exchange Web Services (EWS) will no longer receive functionality updates. In 2023, we announced that EWS will be disabled in Exchange Online in October 2026.
Today we’re announcing we will use a phased, admin controllable disablement plan that starts in October 2026 and concludes with a complete shutdown of EWS in 2027.
Microsoft announced the upcoming end of service for Exchange Web Services (EWS) in Exchange Online. Apple is actively working with Microsoft to update Mail, Calendar, Contacts, Notes, and Reminders to use the Graph API in a future update to macOS 27, including a declarative configuration for device management services.
I’ve been eagerly awaiting Apple’s migration to Microsoft’s newer Graph API because EWS support in Apple Mail has long been buggy. It seems to have gotten worse in recent months, presumably due to server side changes as Microsoft prepares to shut it all down. Unfortunately, Apple is not as far along in the transition as I’d expected.
What made a Mac feel like a Mac at work was the software that came with it. Mail that you could actually scan. A Calendar that was a separate application, so it could live permanently on a second screen instead of hiding behind a tab. Quick Look. Smart mailboxes. Spotlight that found things. Share sheets that worked everywhere. The system behaving as one coherent thing rather than a collection of vendor silos.
[…]
iOS and iPadOS Mail no longer depend on EWS. macOS Mail still does. Same company, same deadline, same protocol, and only one of the two platforms got the work done in time. Microsoft ended up writing the guidance Apple should have written, telling administrators in February that Apple Mail for Mac users would have to switch to Outlook until the applications were updated. […] Apple had years. It had a public deadline. It had, by Microsoft’s own account, one of the most widely used EWS applications in existence. And it let the clock run out.
[…]
Somewhere in every one of these migrations is a line in a change log that reads “users to move to Outlook”, as though a mail client were a fungible commodity, like swapping a stapler. […] This is not the death of the Mac at work. […] It is the death of the Mac experience at work.
Outlook for Mac feels very different from Apple Mail, and users are being squeezed from the Microsoft side, too. Microsoft will be ending the transition to New Outlook in October, but the new version is still missing many features that were present in Legacy Outlook (as well as Apple Mail). Microsoft had long promised that it would implement AppleScript in New Outlook before dropping support for the old version, but last week it changed course:
AppleScript workflows vary widely across organizations and often depend on behaviors from the classic app that don’t exist in the New Outlook. Because these patterns can’t be standardized, full compatibility isn’t feasible. We have decided not to move forward with this feature. We apologize for the inconvenience.
Access only ratchets one way. Mail was allowed because it worked, quietly, for years, over a protocol nobody was auditing. It has now been formally removed under a named cybersecurity policy. Getting it back would require someone in a security function to write a positive case for re-admitting a broad-permission third-party client to the corporate mail estate, and then put their name on it. Nobody’s career improves by doing that. Saying no costs nothing and is never wrong in hindsight.
So if Apple ships Graph support in Mail next year, the people who lost it will not get it back. The door didn’t swing shut. It was bolted, and the reason it was bolted is now written down in a policy document that will outlive the protocol that prompted it.
Apple has no leverage to change that, either. The organisations deploying Macs by the tens of thousands are not Apple partners in any meaningful sense. They are customers who buy boxes. There is no relationship to call on, no joint roadmap, no account team, nobody at Apple whose job it is to notice that a hundred thousand people just lost Mail.
October is when administrators will have to opt back into allowing EWS for a few more months, but some (like Harbourne’s) will be switching off support sooner.
Apple Mail and Outlook aren’t the only options, though. MailMaven supports both Graph and AppleScript.
macOS Golden Gate Beta 27.0 Beta 6 (26A5416b) is now Available!
UPDATED: 08/17/26
This article is being updated as new changes are discovered.
Today, Apple released macOS Golden Gate Beta 6 to developers. The update arrives now only a week after the last one. As we get closer to the public release date of macOS Golden gate, we will start seeing weekly beta releases. macOS Golden Gate Beta 6 is available for download through Software Update in System Settings for users enrolled in the Apple Developer Beta program.
Apple has not provided a complete public list of changes included in this beta beyond its developer release notes. As with previous macOS beta releases, many changes are discovered through testing, system analysis, and comparing files between builds.
This article provides a detailed technical breakdown of macOS Golden Gate Beta 5. Along with covering user-facing changes and new features, this guide will examine system changes, update details, firmware updates, developer changes, and other discoveries found while analyzing the latest beta.
The macOS Golden Gate Public Beta is expected to become available shortly after the developer release.
System Settings > Software Update:
Table of Contents
OCLP for Unsupported Macs Warning
Should You Install macOS Golden Gate Beta?
Full Apple Beta OS Update Release List
Apple macOS Golden Gate Links
What’s New in macOS Golden Gate?
macOS Golden Gate Beta Release History
macOS Golden Gate Full Installer.app
Apple Silicon macOS Golden Gate IPSW Restore File
macOS Golden Gate Update Sizes
Apple Silicon Firmware & iBoot Versions
Safari Version
macOS Recovery Version
Security Content of macOS Golden Gate
macOS Golden Gate Release Notes
Final Notes
NOTE: I hate website ads, but this one small Google ad below helps me with the cost of running Mr. Macintosh.com. Thank you!
1. OCLP for Unsupported Macs Warning
OpenCore Legacy Patcher is not compatible with macOS Golden Gate and macOS Tahoe. Make sure you go into System Settings > Software Update and TURN OFF Download Updates&Install macOS Updates.
If you use OCLP on an unsupported Mac, wait for official OpenCore Legacy Patcher 3.0.0 testing and compatibility information before attempting to install.
2. Should You Install macOS Golden Gate Beta?
Most users should not install macOS Golden Gate Beta on their main Mac. This is early beta software, which means apps may crash, battery life may be reduced, accessories may not work correctly, and some features may be unfinished.
Install it only if you have a test Mac, a full backup, and a reason to test the new release early. I recommend two types of backups: Time Machine & A direct copy of your important files and apps
This might seem like a lot, but TRUST ME, it will be worth it if something goes wrong!
MacAdmins, developers, and advanced users can begin testing app compatibility, MDM enrollment, security tools, VPN clients, printers, FileVault workflows, software update behavior, and deployment processes.
3. Full Apple Beta OS Update Release List
Beta 5 & RC 1
Golden Gate 27.0 (26A5406e) Beta 5 *NEW
Tahoe 26.6.2 (25G82) RC *NEW
iOS & iPadOS 27.0 Beta 5
iOS & iPadOS 26.6 Beta 5
tvOS 27.0 Beta 5
homePodOS 27.0 Beta 5
Safari
Safari 27.0
Developer Tools
Xcode 27 beta *NEW
Command Line Tools for Xcode 27 Beta 5 *NEW
4. Apple macOS Golden Gate Links
Official links will be added as Apple publishes more macOS Golden Gate documentation.
Apple has released the 5th developer beta of macOS Golden Gate 27.
New Features & Changes
Liquid Glass Design Updates
macOS Golden Gate brings a more polished Liquid Glass design with better readability, improved contrast, more consistent toolbars, edge-to-edge sidebars, updated window shapes, and refreshed menu bar icons. Apple has also added a new slider that lets you adjust the Liquid Glass look from very clear to fully tinted.
Performance Improvements
Apple says the system should feel faster overall, with quicker AirDrop transfers, faster network file browsing, faster Safari start page loading, improved Mail search ranking, and better Spotlight search suggestions.
Siri AI on Mac
The biggest new feature is Siri AI on Mac. Siri can now answer more natural questions, understand personal context, take actions inside apps, work from Spotlight, and live inside a new dedicated Siri app for longer conversations.
Visual Intelligence
Visual Intelligence is also coming to the Mac, letting you ask questions about what’s on your screen and get help based on the content you’re looking at.
Writing Tools & Apple Intelligence
Golden Gate expands Writing Tools with Siri, adds better AI photo editing, improves Image Playground, and lets you create Shortcuts from plain-language descriptions.
Safari & Passwords
Safari gets smarter tab grouping, page-change alerts, and faster start page loading. Apple is also adding one-click password fixes to help update weak or reused passwords more easily.
Family, Safety & Accessibility
Golden Gate includes stronger child safety controls, improved Screen Time features, and new accessibility improvements across the system.
Other Notable Changes
Other smaller changes include ultrawide display upgrades, better iCloud Shared Albums, Call Context, enhanced Flyover in Maps, swipe-to-refresh in more apps, and a refreshed video podcasts experience.
8. Apple Silicon macOS Golden Gate IPSW Restore File
An IPSW restore file is mainly used to restore or revive Apple Silicon Macs with Apple Configurator, Finder, or another Mac.
Most users do not need the IPSW file for normal macOS updates. IPSW files are intended for restores, revives, troubleshooting, clean installs, and testing workflows.
Use this link to download the full Mac IPSW restore file directly from Apple:
The delta update & upgrade size will automatically change in size for exactly what your macOS version needs. For example the smallest update size will be from Beta 3 to Beta 4. But if you are upgrading from Beta 1 to Beta 4, the upgrade size will need to include all the fixes in Beta 2 and 3.
Apple Silicon Updates
Delta from macOS Golden Gate Beta 4 with size = 14.26GB
Upgrade from macOS Tahoe 26.6.1 with size = 19.52GB
10. Apple Silicon Firmware & iBoot Versions
The Apple Silicon firmware and iBoot versions included with macOS Golden Gate Beta are listed below.
6. macOS Golden Gate 27 Developer Beta 5 = 20457.1.27
5. macOS Golden Gate 27 Developer Beta 4 = 20457.0.125.0.2
4. macOS Golden Gate 27 Public Beta 1 = 20457.0.77.0.2
3. macOS Golden Gate 27 Developer Beta 3 = 20457.0.77.0.2
2. macOS Golden Gate 27 Developer Beta 2 = 20457.0.13.0.11
1. macOS Golden Gate 27 Developer Beta 1 = 20356.0.0.0.15
If you install macOS Golden Gate Beta, make sure you have a full backup before proceeding. Beta software can cause app compatibility issues, performance problems, and data loss. Do not install this beta on your main Mac unless you are comfortable troubleshooting and restoring macOS.
Apple has released MacOS 27 Golden Gate beta 5 for Mac users who are currently running the beta operating system. For those in the public beta testing program, the same build typically arrives for them soon after. MacOS 27 Golden Gate emphasizes performance improvements to the general system as well as features like Spotlight and ... Read More
macOS Golden Gate Beta 27.0 Beta 5 (26A5406e) is now Available!
UPDATED: 08/10/26
This article is being updated as new changes are discovered.
Today, Apple released macOS Golden Gate Beta 5 to developers. The update arrives after the longest stretch between beta updates so far (over three weeks). macOS Golden Gate Beta 5 is available for download through Software Update in System Settings for users enrolled in the Apple Developer Beta program.
Apple has not provided a complete public list of changes included in this beta beyond its developer release notes. As with previous macOS beta releases, many changes are discovered through testing, system analysis, and comparing files between builds.
This article provides a detailed technical breakdown of macOS Golden Gate Beta 5. Along with covering user-facing changes and new features, this guide will examine system changes, update details, firmware updates, developer changes, and other discoveries found while analyzing the latest beta.
The macOS Golden Gate Public Beta is expected to become available shortly after the developer release.
System Settings > Software Update:
Table of Contents
OCLP for Unsupported Macs Warning
Should You Install macOS Golden Gate Beta?
Full Apple Beta OS Update Release List
Apple macOS Golden Gate Links
What’s New in macOS Golden Gate?
macOS Golden Gate Beta Release History
macOS Golden Gate Full Installer.app
Apple Silicon macOS Golden Gate IPSW Restore File
macOS Golden Gate Update Sizes
Apple Silicon Firmware & iBoot Versions
Safari Version
macOS Recovery Version
Security Content of macOS Golden Gate
macOS Golden Gate Release Notes
Final Notes
NOTE: I hate website ads, but this one small Google ad below helps me with the cost of running Mr. Macintosh.com. Thank you!
1. OCLP for Unsupported Macs Warning
OpenCore Legacy Patcher is not compatible with macOS Golden Gate and macOS Tahoe. Make sure you go into System Settings > Software Update and TURN OFF Download Updates&Install macOS Updates.
If you use OCLP on an unsupported Mac, wait for official OpenCore Legacy Patcher 3.0.0 testing and compatibility information before attempting to install.
2. Should You Install macOS Golden Gate Beta?
Most users should not install macOS Golden Gate Beta on their main Mac. This is early beta software, which means apps may crash, battery life may be reduced, accessories may not work correctly, and some features may be unfinished.
Install it only if you have a test Mac, a full backup, and a reason to test the new release early. I recommend two types of backups: Time Machine & A direct copy of your important files and apps
This might seem like a lot, but TRUST ME, it will be worth it if something goes wrong!
MacAdmins, developers, and advanced users can begin testing app compatibility, MDM enrollment, security tools, VPN clients, printers, FileVault workflows, software update behavior, and deployment processes.
3. Full Apple Beta OS Update Release List
Beta 5 & RC 1
Golden Gate 27.0 (26A5406e) Beta 5 *NEW
Tahoe 26.6.2 (25G82) RC *NEW
iOS & iPadOS 27.0 Beta 5
iOS & iPadOS 26.6 Beta 5
tvOS 27.0 Beta 5
homePodOS 27.0 Beta 5
Safari
Safari 27.0
Developer Tools
Xcode 27 beta *NEW
Command Line Tools for Xcode 27 Beta 5 *NEW
4. Apple macOS Golden Gate Links
Official links will be added as Apple publishes more macOS Golden Gate documentation.
Apple has released the 5th developer beta of macOS Golden Gate 27.
New Features & Changes
Liquid Glass Design Updates
macOS Golden Gate brings a more polished Liquid Glass design with better readability, improved contrast, more consistent toolbars, edge-to-edge sidebars, updated window shapes, and refreshed menu bar icons. Apple has also added a new slider that lets you adjust the Liquid Glass look from very clear to fully tinted.
Performance Improvements
Apple says the system should feel faster overall, with quicker AirDrop transfers, faster network file browsing, faster Safari start page loading, improved Mail search ranking, and better Spotlight search suggestions.
Siri AI on Mac
The biggest new feature is Siri AI on Mac. Siri can now answer more natural questions, understand personal context, take actions inside apps, work from Spotlight, and live inside a new dedicated Siri app for longer conversations.
Visual Intelligence
Visual Intelligence is also coming to the Mac, letting you ask questions about what’s on your screen and get help based on the content you’re looking at.
Writing Tools & Apple Intelligence
Golden Gate expands Writing Tools with Siri, adds better AI photo editing, improves Image Playground, and lets you create Shortcuts from plain-language descriptions.
Safari & Passwords
Safari gets smarter tab grouping, page-change alerts, and faster start page loading. Apple is also adding one-click password fixes to help update weak or reused passwords more easily.
Family, Safety & Accessibility
Golden Gate includes stronger child safety controls, improved Screen Time features, and new accessibility improvements across the system.
Other Notable Changes
Other smaller changes include ultrawide display upgrades, better iCloud Shared Albums, Call Context, enhanced Flyover in Maps, swipe-to-refresh in more apps, and a refreshed video podcasts experience.
8. Apple Silicon macOS Golden Gate IPSW Restore File
An IPSW restore file is mainly used to restore or revive Apple Silicon Macs with Apple Configurator, Finder, or another Mac.
Most users do not need the IPSW file for normal macOS updates. IPSW files are intended for restores, revives, troubleshooting, clean installs, and testing workflows.
Use this link to download the full Mac IPSW restore file directly from Apple:
The delta update & upgrade size will automatically change in size for exactly what your macOS version needs. For example the smallest update size will be from Beta 3 to Beta 4. But if you are upgrading from Beta 1 to Beta 4, the upgrade size will need to include all the fixes in Beta 2 and 3.
Apple Silicon Updates
Delta from macOS Golden Gate Beta 4 with size = 14.26GB
Upgrade from macOS Tahoe 26.6.1 with size = 19.52GB
10. Apple Silicon Firmware & iBoot Versions
The Apple Silicon firmware and iBoot versions included with macOS Golden Gate Beta are listed below.
6. macOS Golden Gate 27 Developer Beta 5 = 20457.1.27
5. macOS Golden Gate 27 Developer Beta 4 = 20457.0.125.0.2
4. macOS Golden Gate 27 Public Beta 1 = 20457.0.77.0.2
3. macOS Golden Gate 27 Developer Beta 3 = 20457.0.77.0.2
2. macOS Golden Gate 27 Developer Beta 2 = 20457.0.13.0.11
1. macOS Golden Gate 27 Developer Beta 1 = 20356.0.0.0.15
If you install macOS Golden Gate Beta, make sure you have a full backup before proceeding. Beta software can cause app compatibility issues, performance problems, and data loss. Do not install this beta on your main Mac unless you are comfortable troubleshooting and restoring macOS.
Apple today provided developers with the fifth beta of macOS Golden Gate, with the update coming two weeks after Apple seeded the fourth beta.
Developers can download macOS Golden Gate by going to System Settings > General > Software Update. Beta Updates will need to be enabled, and a free developer account is required.
macOS Golden Gate includes multiple design improvements. Liquid Glass opacity has been improved to increase readability, there's a slider for controlling the level of transparency, and changes to shadowing make it easier to tell when a window is active. Apps now have uniform toolbars, edge-to-edge sidebars, and less rounded corners, plus there are fewer icons in menu bars.
Siri has been transformed into Siri AI, a chatbot-style assistant that combines general world knowledge, your personal data, and onscreen awareness to answer questions about anything and find information for you. Siri lives in Spotlight, and you can ask questions with the new Search or Ask interface.
There's also a Siri app where you can chat with Siri and view past conversations, and on newer Macs, you can set a custom voice for Siri with personalized pace and expressivity. Visual Intelligence is now on the Mac so Siri can answer questions about what's on your screen, and a Write with Siri feature lets Siri generate text or give feedback on your writing.
There are AI photo editing tools in the Photos app, AI tab organization in Safari, an option to use AI to automatically update weak passwords in the Passwords app, and a revamped Image Playground app that can generate photorealistic images.
If you’re curious about testing out MacOS 27 Golden Gate beta but you aren’t ready for the full commitment of installing it as your primary operating system, the simplest and safest way to run MacOS 27 Golden Gate beta is within a virtual machine. While one of our authors dove right into MacOS 27 Golden ... Read More
Looks like moving the user’s TCC db to /private/var/containers/Data/ProtectedSystem/[UUID]/Data/Library/Application Support/com.apple.TCC/ was not the only change in the whole privacy castle of macOS 27. (What btw was a great move as now attackers with full disk access permissions can’t modify your privacy settings)
macOS 27 quietly ships a new privacy mechanism I hadn’t seen documented anywhere: it extends the com.apple.macl protection that has always guarded sandboxed apps’ ~/Library/Containers/<bundle-id>/Data folders to a hand-picked set of non-sandboxed apps’ ~/Library/Application Support/<name> folders too. I noticed it by accident — Firefox’s profile folder was suddenly inaccessible from Terminal, while MacPass, a password manager sitting right next to it, was wide open. That asymmetry didn’t sit well with me, so I pulled the thread. It ends in a hardcoded app allowlist baked into /usr/libexec/sandboxd (thx @ciphwall for the hint), meant to be updated live via XProtect.
With the launch of the MacOS 27 Golden Gate public beta program, now even more users can experience MacOS 27 as it’s actively being worked on by Apple. MacOS 27 Golden Gate has a heavy focus on performance improvements, but there’s also refinements other than the Liquid Glass interface look, improvements to Spotlight and Mail ... Read More
Ready for a glimpse into our future as Apple users? Public betas for macOS 27 Golden Gate, iOS 27, iPadOS 27, and other major Apple operating systems are now available—but beware of bugs and be sure to back up your devices first.
Apple has finally completed its silicon transition: macOS 27 drops all Intel-based Macs, and iPadOS 27 and watchOS 27 each leave five models by the wayside, whereas the iPhone compatibility list remains unchanged.
For Mac users who are currently running MacOS 27 Golden Gate beta, Apple has released the 4th beta version of MacOS 27 developer beta. The latest beta build is available to download now through Software Update, as an IPSW file, or as the full installer. MacOS 27 Golden Gate has a heavy focus on performance ... Read More
Apple on Monday released the fourth developer betas of iOS 27, iPadOS 27, and macOS Golden Gate (macOS 27), continuing the rapid beta cycle following the company’s announcements at WWDC 2026. The new builds arrive exactly two weeks after the third betas, signaling steady progress toward the expected public releases this fall.
How to Download
Registered developers can obtain the updates directly on their devices:
• iOS 27 / iPadOS 27: Go to Settings > General > Software Update.
• macOS Golden Gate: Go to System Settings > General > Software Update (with Beta Updates enabled and a developer account linked).
Major Features in This Cycle
Both platforms continue to emphasize Apple Intelligence and a refined user interface centered around the new Liquid Glass design language.
Siri AI takes center stage as a more capable, chatbot-style assistant. It combines general world knowledge, personal context from apps like Messages and Mail, and on-screen awareness to deliver smarter responses. A dedicated Siri app now stores conversation history, and system-wide Write with Siri helps generate or refine text. On the Mac, users can also create custom voices with personalized pace and expressivity. Visual Intelligence has been enhanced and relocated (to the Camera app on iOS and integrated into the desktop on macOS) for better contextual understanding of what’s on screen.
Design and Performance Improvements include:
• Enhanced Liquid Glass with better opacity, readability, and a new transparency slider.
• Refined window shadows, uniform toolbars, edge-to-edge sidebars, and subtler rounded corners on macOS.
• Faster app launching, quicker keyboard appearance, improved AirDrop speeds, and smoother Wi-Fi-to-cellular handoffs across iOS devices.
• Overall performance optimizations that make the system feel snappier, even on older hardware.
Apple Intelligence Expansions add new capabilities in Photos, Safari (AI tab organization), Wallet, Passwords (automatic weak password updates), Shortcuts, and the revamped Image Playground app, which now supports photorealistic image generation.
MacDailyNews Take: With beta 4 now available, Apple is expected to continue refining stability, battery life, and features in the coming weeks. A public beta is likely to follow soon, ahead of the official launch of iOS 27, iPadOS 27, and macOS Golden Gate in September.
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macOS Golden Gate Beta 27.0 Beta 4 (26A5388g) is now Available!
UPDATED: 07/21/26
This article is being updated as new changes are discovered.
Today, Apple released macOS Golden Gate Beta 4 (26A5388g) to developers. The update arrives two weeks after macOS Golden Gate Beta 3 and is available for download through Software Update in System Settings for users enrolled in the Apple Developer Beta program.
Apple has not provided a complete public list of changes included in this beta beyond its developer release notes. As with previous macOS beta releases, many changes are discovered through testing, system analysis, and comparing files between builds.
This article provides a detailed technical breakdown of macOS Golden Gate Beta 4. Along with covering user-facing changes and new features, this guide will examine system changes, update details, firmware updates, developer changes, and other discoveries found while analyzing the latest beta.
This article will track everything new in macOS Golden Gate Beta 4, including confirmed features, UI changes, bug fixes, update sizes, firmware updates, security changes, and additional developer changes identified during analysis.
The macOS Golden Gate Public Beta 2 is expected to become available shortly after the developer release.
System Settings > Software Update:
Table of Contents
OCLP for Unsupported Macs Warning
Should You Install macOS Golden Gate Beta?
Full Apple Beta OS Update Release List
Apple macOS Golden Gate Links
What’s New in macOS Golden Gate?
macOS Golden Gate Beta Release History
macOS Golden Gate Full Installer.app
Apple Silicon macOS Golden Gate IPSW Restore File
macOS Golden Gate Update Sizes
Apple Silicon Firmware & iBoot Versions
Safari Version
macOS Recovery Version
Security Content of macOS Golden Gate
macOS Golden Gate Release Notes
Final Notes
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1. OCLP for Unsupported Macs Warning
OpenCore Legacy Patcher is not compatible with macOS Golden Gate and macOS Tahoe. Make sure you go into System Settings > Software Update and TURN OFF Download Updates&Install macOS Updates.
If you use OCLP on an unsupported Mac, wait for official OpenCore Legacy Patcher 3.0.0 testing and compatibility information before attempting to install.
2. Should You Install macOS Golden Gate Beta?
Most users should not install macOS Golden Gate Beta on their main Mac. This is early beta software, which means apps may crash, battery life may be reduced, accessories may not work correctly, and some features may be unfinished.
Install it only if you have a test Mac, a full backup, and a reason to test the new release early. I recommend two types of backups: Time Machine & A direct copy of your important files and apps
This might seem like a lot, but TRUST ME, it will be worth it if something goes wrong!
MacAdmins, developers, and advanced users can begin testing app compatibility, MDM enrollment, security tools, VPN clients, printers, FileVault workflows, software update behavior, and deployment processes.
3. Full Apple Beta OS Update Release List
Beta 4 & RC 6
Golden Gate 27.0 (26A5388g) Beta 4
Tahoe 26.6 (25G70)
Sequoia 15.7.8 (24G822)
Sonoma 14.8.8 (23J619)
iOS & iPadOS 27.0 (24A5390f) Beta 4
iOS & iPadOS 26.6 (23G71)
tvOS 27.0 (24J5325d) Beta 4
homePodOS 27.0 (24J5325d) Beta 4
tvOS 26.6 (23L772)
watchOS 26.6 (23U67)
visionOS 26.6 (23O770)
Safari
Safari 27.0
Developer Tools
Xcode 27 beta 4
Command Line Tools for Xcode 27 Beta4
4. Apple macOS Golden Gate Links
Official links will be added as Apple publishes more macOS Golden Gate documentation.
Apple has released the 4th developer beta of macOS Golden Gate 27.
New Features & Changes
Liquid Glass Design Updates
macOS Golden Gate brings a more polished Liquid Glass design with better readability, improved contrast, more consistent toolbars, edge-to-edge sidebars, updated window shapes, and refreshed menu bar icons. Apple has also added a new slider that lets you adjust the Liquid Glass look from very clear to fully tinted.
Performance Improvements
Apple says the system should feel faster overall, with quicker AirDrop transfers, faster network file browsing, faster Safari start page loading, improved Mail search ranking, and better Spotlight search suggestions.
Siri AI on Mac
The biggest new feature is Siri AI on Mac. Siri can now answer more natural questions, understand personal context, take actions inside apps, work from Spotlight, and live inside a new dedicated Siri app for longer conversations.
Visual Intelligence
Visual Intelligence is also coming to the Mac, letting you ask questions about what’s on your screen and get help based on the content you’re looking at.
Writing Tools & Apple Intelligence
Golden Gate expands Writing Tools with Siri, adds better AI photo editing, improves Image Playground, and lets you create Shortcuts from plain-language descriptions.
Safari & Passwords
Safari gets smarter tab grouping, page-change alerts, and faster start page loading. Apple is also adding one-click password fixes to help update weak or reused passwords more easily.
Family, Safety & Accessibility
Golden Gate includes stronger child safety controls, improved Screen Time features, and new accessibility improvements across the system.
Other Notable Changes
Other smaller changes include ultrawide display upgrades, better iCloud Shared Albums, Call Context, enhanced Flyover in Maps, swipe-to-refresh in more apps, and a refreshed video podcasts experience.
8. Apple Silicon macOS Golden Gate IPSW Restore File
An IPSW restore file is mainly used to restore or revive Apple Silicon Macs with Apple Configurator, Finder, or another Mac.
Most users do not need the IPSW file for normal macOS updates. IPSW files are intended for restores, revives, troubleshooting, clean installs, and testing workflows.
Use this link to download the full Mac IPSW restore file directly from Apple:
The delta update & upgrade size will automatically change in size for exactly what your macOS version needs. For example the smallest update size will be from Beta 3 to Beta 4. But if you are upgrading from Beta 1 to Beta 4, the upgrade size will need to include all the fixes in Beta 2 and 3.
Apple Silicon Updates
Delta from macOS Golden Gate Beta 3 with size = 6.93GB
Upgrade from macOS Tahoe 26.5.2 with size = 20.24GB
10. Apple Silicon Firmware & iBoot Versions
The Apple Silicon firmware and iBoot versions included with macOS Golden Gate Beta are listed below.
5. macOS Golden Gate 27 Developer Beta 4 = 20457.0.125.0.2
4. macOS Golden Gate 27 Public Beta 1 = 20457.0.77.0.2
3. macOS Golden Gate 27 Developer Beta 3 = 20457.0.77.0.2
2. macOS Golden Gate 27 Developer Beta 2 = 20457.0.13.0.11
1. macOS Golden Gate 27 Developer Beta 1 = 20356.0.0.0.15
If you install macOS Golden Gate Beta, make sure you have a full backup before proceeding. Beta software can cause app compatibility issues, performance problems, and data loss. Do not install this beta on your main Mac unless you are comfortable troubleshooting and restoring macOS.
The AI frontier from the two big labs (and – we have to be honest with the numbers here – probably SpaceXAI and Meta now, too) is in a completely different league at the moment. I spent my first couple of weeks with Siri AI trying to convince myself that I could replace Codex with Siri AI, and that was the wrong approach. There is a potential future in which Siri AI can become a more proactive and capable agent, but that’s not what Apple is shipping this year.
[…]
Siri AI is a dramatically better Siri for typical Siri stuff. The new Siri understands your commands and nuanced requests better because of the LLMs behind it; it can often perform multiple requests in one go (such as setting multiple timers with one command); the new expressive (and customizable!) voices sound great, and they’re terrific at reading and summarizing notifications. Apple’s first advantage compared to other chatbots is right here: only Siri can integrate with the iPhone and iPad to this extent, so even if the Foundation models aren’t as smart as the competition, Siri can do a lot more for most people on their devices because neither OpenAI nor Anthropic have OSes they can control.
[…]
The biggest issue I’ve encountered is the inconsistency of it all. Very often, the new Siri AI still replies with a generic “Uh oh, something went wrong“ error that doesn’t explain what the error was or why it happened. Sometimes, I ask a question via voice, and it errors out, but then a few seconds later, I type the same question in the app, and it’s fine.
[…]
My problem is that, right now with Apple’s own apps, both the index and Siri’s ability to perform actions are very inconsistent. The assistant hallucinates abilities it doesn’t have, and it frequently just doesn’t work.
The good news is that Siri AI is capable: impressively so, at times. In the lowest of low bars, it certainly beats the pants off the previous incarnation of Siri, but its access to your own personal data and all of the app on your phone also unlocks a host of new possibilities.
But it’s also not without the pitfalls that underlie all LLM-powered chatbots: errors in understanding, hallucinations, and so on.
[…]
The app itself is pretty barebones, letting you view those conversations in List or Grid layouts, select multiple conversations to delete them, and pin or rename any single conversation. In Settings : Siri, you can choose to either open to the overview or to a new conversation and decide whether old conversations are kept for 30 days, 1 year, or forever. It’s a little strange that one-off queries (“What’s the average height of the Norwegian World Cup team?”) are stored alongside more involved conversations (“Can you help me build a specific RSS feed for this site?”); I also ended up with a few orphan blank “New conversations” which I deleted, but it’d be nice if you could filter to find those. Conversations are fully searchable and sync between devices via iCloud.
Despite the current limitations, if you use chatbots as a replacement for Google Search, you’ll probably have a good experience with the new Siri app. That’s because even in these early betas, if you ask Siri something like, “Give me a day trip itinerary for a trip to Chicago this Saturday,” you’re likely to get good but pretty middle-of-the-road recommendations. From there, though, you can drill down with follow-up queries to get something more in line with your tastes. The results include source links you can follow, too. Given the ad-strewn mess that web search has become, using Siri for this sort of thing is a meaningfully better experience.
The one caveat on Siri’s world knowledge is that it’s roughly 2-3 weeks stale in some places.
[…]
A good example is Music. You can prompt Siri to play a song, but most of the rich metadata in the app isn’t exposed to Siri, which is a shame because it is exposed elsewhere, for example to AppleScript.
Thanks to the top-to-bottom revamp that is Siri AI, Siri is reliably intelligent. Finally. We are still in the midst of beta season, and Apple is yet to confirm whether Siri AI will formally launch with iOS 27 in September or sometime later in the year, but the feature is up to scratch. There are bugs and glitches and edge-case quirks, but on the whole, it wipes the floor with old Siri and is competent enough to supplant my everyday usage of other chatbots too.
[…]
Siri AI can get a snapshot of what’s on screen, but it cannot control the UI for you autonomously. As such, if you ask it to do something outside of its library of available app actions, it will say it can’t do that. Often, it can quote the relevant steps for you to do it yourself, but obviously that falls short of the ideal experience. This feels a bit lacklustre to people already embracing AI agents en masse. Claude and Codex on Mac do not hit these walls; they are all too keen to move your mouse for you and run terminal commands until the job is done.
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