Release Date ― June 9, 2026
Build Number ― 25A5279m
Apple Silicon System Firmware Version ― 13822.0.88.511.1
T2 BridgeOS System Firmware Version ― 23.16.5283.0.7
New Features & Changes (Found something new? Please press "Edit" on the bottom of this post and add it here)
Resolved Issues
New Issues
(If you are encountering any issues, please press "Edit" on the bottom of this post and add it here)
Remaining Issues
Untested Issues
- Alarms may not play when your display is asleep for a long period of time (FB10086690)
- Workaround: Make your display not fall asleep in Settings > Lock Screen > Turn display off on ____ when inactive. You can turn your brightness off.
- Issue present since macOS 13.0
- This is a DEVELOPER BETA! This means that you should install on either a second device or a second volume. This is not currently usable on a day-to-day basis and certain apps may not work. To see those apps, you can check this thread.
- Please know, Memory Management has always been an issue on any OS (not just Apple's). If you believe there is a Memory Leak, please go to the Apple Menu > Restart > Restart to fix it.
- When a new macOS release comes out, all issues automatically go to "Untested Issues" until they are moved by someone. Issues that stay in Untested for 3 releases (beta or smooth) will be removed from all future threads. When there is a new macOS release, please be sure to let us know about the issue's status by moving it to either "Remaining Issues" or "Resolved Issues"
- macOS 26 Tahoe will be installed via a Delta Update in System Settings. Please be aware about this and the update won’t install with an installer.
- macOS 26 is officially supported on the following devices. If your device is not listed below, it has unfortunately been dropped by Apple. Any efforts of trying to get your Mac running macOS 26, including bugs should be discussed in this thread.
- MacBook Air: M1, M2, M3, M4
- MacBook Pro: 2019 (16 Inch only), Intel 2020 (4 thunderbolt port only), M1, M1 Pro/M1 Max, M2, M2 Pro/M2 Max, M3/M3 Pro/M3 Max, M4/M4 Pro/M4 Max
- Mac mini: M1, M2/M2 Pro, M4/M4 Pro
- \iMac: 5K 2020, M1, M3, M4
- Mac Pro: 2019, M2 Ultra
- Mac Studio: M1 Max/Ultra, M2 Max/Ultra, M3 Ultra, M4 Max
- macOS Tahoe 26.0 Release Notes
- macOS Tahoe Overview
- Apple Security Updates
- Become an Apple Beta Tester
- Full Installer (App Store) (Pending)
- Full Installer (Direct Download)
WIP: If I missed any built-in Mac apps, feel free to add them to the list. So far, this is only macOS Sequoia apps.
| App Name | Old Build Number (15.5) | New Build Number (26.0 Beta 1) | Status |
|---|---|---|---|
| Finder | 15.5 | 16.0 | Changed |
| Safari | 18.5 (20621.2.5.11.8) | ||
| Messages | 14.0 (1402.600.41.1.5) | ||
| 16.0 (3826.600.51.1.1) | |||
| Maps | 3.0 (2864.25.3.6.8) | ||
| Photos | 10.0 (760.6.150) | ||
| FaceTime | 36 (36) | ||
| Calendar | 15.0 (2995.6.1) | ||
| Contacts | 14.0 (2695.500.71) | ||
| Reminders | 7.0 (3738) | ||
| Notes | 4.12.6 (2998.56) | ||
| TV | 1.5.5.34 | ||
| Music | 1.5.5.34 | ||
| Podcasts | 1.1.0 (4024.600.7) | ||
| Stocks | 7.3 (1571) | ||
| News | 10.4 (5681) | ||
| App Store | 3.0 (1010.5.4) | ||
| System Settings | 15.0 (15.0) | ||
| Clock | 1.1 (62) | ||
| Weather | 5.1 (881) | ||
| Freeform | 3.5 (419.121.1) | ||
| Print Center | 1.0 (12.3) | ||
| Tips | 15.5 (506.4.2) | ||
| iPhone Mirroring | 1.3 (50.5.4) | ||
| Image Playground | 1.0 (1) | ||
| Calculator | 11.0 (224) | ||
| Voice Memos | 3.1 (1274) | ||
| Feedback Assistant | 5.1 (577.4) | ||
| Home | 9.0 (1026.6.29.4.2) | ||
| Preview | 11.0 (1069.5.2) | ||
| Books | 7.5 (6382) | ||
| Photo Booth | 13.1 (1165) | ||
| System Information | 11.0 (915) | ||
| Stickies | 10.3 (10.3) | ||
| Shortcuts | 7.0 (3607.0.2) | ||
| Dictionary | 2.3.0 (294) | ||
| Find My | 4.0 (415.25.2.11.24) | ||
| TextEdit | 1.20 (409) | ||
| QuickTime Player | 10.5 (1216.2) | ||
| Grapher | 2.7 (1) | ||
| Font Book | 11.0 (506.4.0.6) | ||
| Chess | 3.18 (Build Chess-544.1) | ||
| Image Capture | 8.0 (1106) | ||
| Voiceover Utility | 10 (964.12.11) | ||
| AirPort Utility | 6.3.9 (639.26) | ||
| Migration Assistant | 15.5 (15.5) | ||
| Terminal | 2.14 (455.1) | ||
| Activity Monitor | 10.14 (1040) | ||
| Console | 1.1 (8.4.2) | ||
| DVD Player | 6.0 (5500.72) | ||
| Keychain Access | 11.0 (55324.100.7) | ||
| Automator | 2.10 (528) | ||
| Script Editor | 2.11 (231) | ||
| Disk Utility | 22.7 (2400) | ||
| Digital Color Meter | 22.7 (2400) | ||
| ColorSync Utility | 12.1.0 (431) | ||
| Bluetooth File Exchange | 9.0 (1) | ||
| Audio MIDI Setup | 3.6 (3.6) |
Feel free to add in any issues or new features that you have spotted in this release by clicking the "Edit" button below.
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