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Release Notes ask developers to update their apps to utilize new features.

The first developer beta of macOS Big Sur 11.4 is available for testing just days before Apple plans to release version 11.3 to the public.

Apple made the macOS Big Sur 11.3 Release Candidate beta available to developers after the “Spring Loaded” event last week. Apple then released the first beta for macOS 11.4 one day after the event.

Developers can download the latest betas and configuration profiles can from the Apple Developer Center. There will also be subsequent changes available as over-the-air updates on enrolled devices. Release notes indicate that testers can now use graphics cards based on the AMD Navi RDNA2 architecture (6800, 6800XT and 6900XT). Apple did not mention any other features in the notes.

Deprecations for XCode

Apple warns developers not to use the iOS MinimumOSVersion information property list key to declare the minimum release of macOS in which your app runs. Developers should use LSMinimumSystemVersion instead, they say. Future releases of macOS will ignore the MinimumOSVersion key in Mac apps, including apps built with Mac Catalyst.

Future releases of macOS use the LSMinimumSystemVersion key in iOS apps built with Xcode 12.5 or later. If an iOS app doesn’t include an LSMinimumSystemVersion key, future releases of macOS compare the app’s MinimumOSVersion with the version of its Mac Catalyst runtime to determine compatibility.