Apple has released macOS 10.12 Sierra Beta 2 to developers for testing. The build number is 16A239j.
The macOS 10.12 Developer Preview supports the following Macs: • MacBook, iMac: Late 2009 or newer • MacBook Air, MacBook Pro, Mac mini, Mac Pro: 2010 or newer
Developers can get an App Store Redemption Code for Sierra from the link below. Please follow iClarified on Twitter, Facebook, or RSS for updates.
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