Apple pushed the first macOS Tahoe 26.3 developer beta in mid-December, and it has now moved the update to the next step. Developers can download macOS Tahoe 26.3 beta 2 today as Apple continues testing ahead of the public release.
The new developer build is 25D5101c. The earlier beta 1 build was 25D5087f, which helps you confirm you are on the latest seed.
macOS Tahoe 26.3 beta 2 is available through the usual Software Update flow for registered developers. Apple lists the release date as January 12, 2026.
How to update macOS Tahoe 26.3 beta 2
- Open System Settings.
- Go to General and then Software Update.
- Tap the i button next to Beta Updates.
- Select macOS Developer Tahoe Beta.
- Tap Done, then install the update when it appears.
Changes in macOS Tahoe 26.3 beta 2
Early testing has not surfaced big, headline features in this seed. The update looks focused on refinement work, which is typical for a mid cycle beta.
Here is what stands out so far:
- Bug fixes and performance improvements: Apple continues tightening stability and system behavior across the OS.
- Under the hood adjustments: These builds often include framework changes and smaller fixes that matter most to developers and app compatibility testing.
If you notice a specific change, the build number is the quickest way to confirm you are comparing the same release.
That is it for macOS Tahoe 26.3 beta 2 right now. If you spot new features, regressions, or fixes, let us know in the comments.
