Apple Releases iOS 26.3.1 and iPadOS 26.3.1 With Bug Fixes and Studio Display Support
Apple today released iOS 26.3.1 and iPadOS 26.3.1, minor updates to the iOS 26 and iPadOS 26 operating systems. The software comes three weeks after Apple released iOS 26.3 and iPadOS 26.3.

The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update.
According to Apple's release notes, the update adds support for the new Studio Display and Studio Display XDR, and it includes unspecified bug fixes.
Apple is also beta testing iOS 26.4 and iPadOS 26.4, major updates that are set to come out this spring.
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The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update.
iOS 26.4...
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps.
To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....