Apple released macOS Tahoe 26.3.1 on March 4, 2026, and the main reason to install it is simple: your Mac needs this update to properly work with Apple’s new Studio Display and Studio Display XDR.
If you plan to buy one of the new monitors or you already have one on the way, updating now saves you the usual first-day headaches like a display not showing up, running at the wrong refresh rate, or missing features that depend on the latest software. Apple also says the update includes bug fixes, so even if you are not shopping for a new monitor, you still get a stability cleanup on top of the display support.
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Apple also pushed a firmware update for the new displays alongside this macOS release, which usually means you should update macOS first, then connect the display and let the firmware finish its job in the background.
How to update
- Click the Apple menu.
- Open System Settings.
- Click General.
- Click Software Update.
- If you see macOS Tahoe 26.3.1, click Update Now and follow the prompts.
Changes in macOS Tahoe 26.3.1
This update expands external display support to include the new Studio Display and Studio Display XDR.
Apple’s compatibility details for Studio Display XDR also list macOS Tahoe 26.3.1 or later as the requirement, which means you should treat this update as mandatory if you want the smoothest setup experience after you plug the display in.
If you installed macOS Tahoe 26.3 earlier, you will not see a big feature list here, since this release focuses on getting new hardware working properly and tightening up bugs rather than adding headline features.
Let us know in the comments if macOS Tahoe 26.3.1 fixed any display issues on your Mac, and tell us which monitor you plan to use it with.
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