Apple is now on its fourth round of developer betas for most of its operating systems, with new release candidate builds of iOS 14.3, iPadOS 14.3, tvOS 14.3, and watchOS 7.2 available for testing.
The latest builds of each operating system can be acquired from the Apple Developer Center for devices enrolled within the testing program, as well as via an over-the-air update on hardware already using beta software. A public beta build usually arrives some time after the developer counterparts, as part of the Apple Beta Software Program.
The updates released include support for AirPods Max and Apple Fitness+. Apple announced on Tuesday that Apple Fitness+ will become available on December 14 and AirPods Max will ship on December 15, meaning the OS updates will release to the public soon.
So far, the betas for iOS 14.3 have introduced support for Apple ProRAW, a new image format that combines the benefits of shooting photographs in RAW with that of computational photography. The Find My app had a new video revealing an updated pairing interface, along with a glyph seemingly representing headphones like AirPods Studio.
For HomeKit, there were changes to how it managed the updates of accessories within the smart home network. Items such as App Clips, the Health app gaining cardio fitness categories, Shortcut wallpaper changes, and updates to default search options have also been discovered.
AppleInsider, and Apple itself, strongly suggest users avoid installing betas on to "mission-critical" or primary devices, due to the potential for data loss or other issues. It is instead recommended to install betas onto secondary or non-essential devices, and to ensure there are sufficient backups of important data beforehand.