Apple has made the first build of the macOS Big Sur 11.3 beta available to those in the public beta program.
Those who wish to participate can download the latest betas and configuration profiles from the Apple Beta Software Program. Subsequent changes for existing participants are available as over-the-air updates on enrolled devices.
Release notes indicate you can now use graphics cards based on the AMD Navi RDNA2 architecture (6800, 6800XT and 6900XT). No other features were detailed.
AppleInsider, and Apple itself, strongly advise users don't install betas on highly-important or primary devices, due to the potential for data loss or other issues. Instead, it is recommended to install betas onto secondary or non-essential devices and to ensure there are sufficient backups of important data beforehand.
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