Apple Seeds Third Beta of macOS Sierra 10.12.1 to Devs, Public Beta Coming Soon
Today, October 3, 2016, Apple started seeding the third Beta build of the upcoming macOS Sierra 10.12.1 operating system to developers who have a paid Apple Developer account.
Tagged as build 16B2338c, macOS Sierra 10.12.1 Beta 3 is now available for download on your Apple Developer account if you’re a registered dev developing apps for the macOS, iOS, watchOS, or tvOS ecosystem. This third Beta snapshot comes one week after the release of the second one on September 27, 2016.
As expected, Apple patched various security issues discovered or reported by users since macOS Sierra 10.12.1 Beta 2, which means that macOS Sierra 10.12.1 Beta 3 is here to enhance the compatibility, security, and stability of your Mac. It can be installed on registered MacBook Pro, MacBook Air, iMac, or Mac Mini devices.