APPLE INSIDER

Apple on Tuesday released the first macOS Big Sur 11.3 developer beta with bug fixes and improvements.

macOS Big Sur 11.3 developer beta 1

Apple offers downloads of its betas through the Apple Developer Center, for participants in its developer test program, though hardware already running beta software can also receive an over-the-air update. Public beta variants usually arrive a short time after developer versions, and can be accessed through the Apple Beta Software Program website.

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Source: APPLE INSIDER