Overview
- Apple published macOS Tahoe 26.1 (build 25B78) with fixes for 90 vulnerabilities, and none are reported as exploited in the wild.
- Release notes list a virtualization Known Issue where macOS virtual machines report a serial number of 0, which blocks iCloud and related applications.
- Developers and users report a severe performance regression that slows scrolling and can stall interface updates.
- Feature additions include a Tinted Liquid Glass option, AutoMix for Apple Music over AirPlay, improved FaceTime audio in low-bandwidth conditions, and new Spotlight controls to set clipboard history to 30 minutes, 8 hours, or 7 days.
- Under-the-hood changes include firmware updates for Intel T2 Macs and Apple silicon iBoot plus numerous app, driver, and APFS updates, with several AppKit and audio bugs reported fixed.