Apple has released the third beta of macOS Tahoe 26.3 to developers for testing. The build number for this update is 25D5112c.
This release follows the first beta seeded in mid-December and the second beta seeded earlier this month. It is not yet clear what specific changes are included in this third beta, but the update likely focuses on bug fixes and performance improvements. We are installing the new build now and will update this post if any significant new features or changes are discovered.
macOS Tahoe 26 was a major update for the Mac, introducing a universal design language called 'Liquid Glass,' a dedicated Phone app, and an overhauled Spotlight search. You can review the full list of changes in the official macOS Tahoe 26 release notes.
Developers can download the macOS restore image for Apple Silicon Macs from the link below. Alternatively, you can update via System Settings > General > Software Update > Beta Updates and selecting the macOS Tahoe Developer Beta.
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