Release Date: July 7, 2025
Build Number: 25A5306g
Apple Silicon System Firmware Version: 13822.0.194.0.3
T2 BridgeOS System Firmware Version: Pending
The absence of the update in Settings may be due to Apple not releasing Rosetta 26 Beta 3 at this time. If you have Rosetta installed, you will need to delete it to access the update. New Features & Changes: Users are encouraged to contribute by pressing “Edit” at the bottom of this post to share any new findings.
Resolved Issues: No specifics listed. Users can report issues by clicking “Edit.” New and Remaining Issues: Users can identify and add any encountered problems by using the “Edit” button.
Untested Issues: There are known potential issues, including alarm notifications not playing when the display has been asleep for an extended duration (FB10086690). To temporarily resolve this, adjust your display settings in Settings > Lock Screen to prevent the display from sleeping. This issue has persisted since macOS 13.0.
Additional Notes: This is a DEVELOPER BETA, and it is recommended to install it on a second device or separate volume, as it is not suitable for everyday use and certain applications may not function properly. Memory management can be problematic across all operating systems. If you suspect a memory leak, restarting your device can often alleviate the issue.
When a new macOS version is released, all existing issues are categorized as “Untested” until validated. Any issue remaining in the “Untested” category for three releases will be removed from future threads. macOS 26 Tahoe will utilize a Delta Update for installation, which means it cannot be installed using an installer.
Supported devices include recent models of MacBook Air, MacBook Pro, Mac mini, iMac, Mac Pro, and Mac Studio. Unsupported devices will not receive this update. Users seeking to run macOS 26 on older Macs should refer to relevant discussions for guidance.
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