Apple has released the second public betas of macOS Sierra 10.12.5 and iOS 10.3.2 public beta number two. The former is a minor update that focuses on bug fixes and speed improvements.The latter offers under-the-hood bug fixes and security improvements.
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If you’re not already signed up for the public beta program, you can do so here. The public beta program is free, but remember: beta software is unfinished software so use with care.