macOS Tahoe 26.3.1

What's New in macOS Tahoe 26.3.1

macOS Tahoe 26.3.1 is a hardware enablement update released alongside Apple's March 4 product announcements. It ships preinstalled on the new M5 MacBook Air and M5 Pro/Max MacBook Pro, and adds support for the new Studio Display and Studio Display XDR.

Display Support

• Studio Display (2026): Full support for the second-generation Studio Display
• Studio Display XDR: Reference-grade workflows including hardware calibration and reference modes

Hardware Enablement

• M5 MacBook Air (13-inch and 15-inch)
• M5 Pro and M5 Max MacBook Pro (14-inch and 16-inch)

Other Improvements

• Targeted bug fixes carried over from late 26.3 reports
• Background Security Improvement (BSI) channel groundwork

System Requirements

• MacBook Pro: 2019 and later
• MacBook Air: 2020 and later
• Mac mini: 2020 and later
• iMac: 2021 and later
• Mac Studio: All models
• Mac Pro: 2019 and later

How to Update

1. Back up your Mac
2. Open System Settings → General → Software Update
3. Click Update Now when 26.3.1 is offered