October 12, 2016

Apple Releases macOS Sierra 10.12.1 Beta 4

Following the launch of macOS Sierra 10.12.1 Beta 3 just one week ago, the company has officially released an all-new build of its latest and greatest computer operating system, macOS Sierra 10.12.1 Beta 4 build number 16B2548a, to developers for download and testing.

Similar to previous beta releases, the fourth beta build of macOS Sierra 10.12.1 is also a minor update featuring:

  • Under-the-hood enhancements
  • Performance improvements
  • Other bug fixes
macOS Sierra 10.12.1 Beta 4 is now rolling out as a free update through Software Update or via the Mac Dev Center for registered developers.


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