In macOS Sierra 10.12.6 Beta 5, some notable changes included:

Here is what these two DMGs offered when they landed in Cupertino’s servers six years ago.

macOS Sierra was significant for introducing Siri to the Mac and unlocking the Apple Watch for auto-unlock. The 10.12.6 update was the final major iteration of Sierra before High Sierra took over.

: It was distributed as a DMG file via the Apple Developer Center and as an over-the-air update through the Mac App Store.