Apple has released macOS Tahoe 26.3 beta 3 for developers. The new build number is 25D5112c, and it arrives on the same day as Apple’s iOS 26.2.1 release.
This is still an early beta cycle. So far, beta testers have not spotted major new features in macOS 26.3, which suggests Apple is spending this round on fixes and polish ahead of the public release.
Apple has not announced an exact release date for macOS 26.3. Based on the usual cadence, the public update is expected soon, with attention already shifting to the next beta wave, including 26.4 and a reported Siri demo tied to Google Gemini in the second half of February.
How to update macOS Tahoe 26.3 beta 3
- Open System Settings on your Mac.
- Go to General, then Software Update.
- Select Beta Updates, then choose the macOS Developer Tahoe Beta option.
- Download and install the update.
Changes in macOS Tahoe 26.3 beta 3
What’s new in this build
- Build number: 25D5112c
- No major new user-facing features spotted yet
- Expected focus: stability, bug fixes, and under-the-hood improvements
If you are testing on a daily-use Mac, keep a backup handy. Betas can still bring app bugs, battery drain, and driver issues, even when the change log looks quiet.
What happens next
If Apple follows its typical schedule, macOS Tahoe 26.3 should move toward a public release in the coming weeks. After that, the company is expected to start seeding 26.4 betas, which reports link to a broader Siri push and potential Gemini-related previews in February.
Have you noticed anything new in macOS Tahoe 26.3 beta 3, including bug fixes or performance changes? Let us know in the comments.
