OS X 10.12 was expected to be the name of the 2016 Mac operating system update, following OS X 10.11, but Apple opted to change the name of its Mac operating system to "macOS" to bring it in line with tvOS, iOS, and watchOS.

What was once OS X 10.12 is now known as "macOS Sierra," set to be released to the public in the fall of 2016. Full details on macOS Sierra, which includes new features like Siri integration and automatic Mac unlocking, can be found in our dedicated macOS Sierra Roundup.