Apple on Thursday released the first public beta of macOS Big Sur and the fourth iOS 14 and iPadOS 14 betas to the public software testing program.
The macOS Big Sur public beta should reflect the same build as the fourth developer beta released on Wednesday. The biggest changes in macOS are in its design, with rounded windows and more transparency throughout. This beta also enables 4K playback of YouTube videos for the first time when using Safari.
Apple has not released the public beta for watchOS 7 yet.
AppleInsider, and Apple itself, strongly recommend users don't install the betas on to "mission-critical" or primary devices, as there is the remote possibility of data loss or other issues. Instead, testers should install betas onto secondary or non-essential devices, and to make sure there are sufficient backups of important data before updating.