The Mac's operating system is now called macOS

OS X is dead. Long live macOS.
At its annual Worldwide Developer Conference on Monday, Apple announced macOS Sierra, the next version of its computer operating system for Macs shipping this fall as a free update. It'll be available as a developer preview in July.
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Under the hood, macOS is no different from OS X. macOS's is still based on Unix. It's just a new name is all. 
With macOS, Apple now has all of its operating systems for its various devices all tidied up. iPhone, iPad and iPod touch have iOS, Apple Watch has watchOS, Apple TV has tvOS and now Macs have macOS. Read more...
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