Contrary to expectations, Apple is rolling out a new wave of developer betas ahead of next week’s “Awe Dropping” event. Here’s what to expect.
As with past releases, macOS Tahoe 26 developer beta 8 brought mostly under-the-hood improvements last week, which is also expected from today’s release.
The build number for today’s macOS Tahoe 26 beta 9 release is 25A5351b. We’re taking a closer look to spot any user-facing tweaks, and will report back with anything noteworthy.
What’s new on macOS Tahoe 26?
As announced at WWDC25, macOS Tahoe 26 introduces the Liquid Glass UI overhaul, alongside features like Live Activities on the Mac, a much improved Spotlight with clipboard history and Shortcuts integration, plus a dedicated Phone app and Live Translation for Messages, FaceTime and phone calls.
The system is also getting the new Games app, as well as the long-awaited Journal app.
Here’s how to install the macOS Tahoe 26 developer beta 9:
- Backup your Mac
- Open System Settings
- Go to General ⇾ Software Update
- Click the ‘i’ icon next to Beta Updates
- From the dropdown menu in the top-right, select the macOS Developer Tahoe Beta
- Hit ‘Done’

Update: Following the developer beta releases, Apple is now also rolling out the public betas. The build number for macOS Tahoe 26 Beta 6 is 25A5351b, which is the same as developer beta 9.
Did you spot any changes in today’s betas? Let us know in the comments.
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