what is the latest os update for mac
macOS The fall release of macOS 10.13 High Sierra was announced on June 5, 2017 at Apple's WWDC event.[215] On September 12, 2017 at Apple's iPhone event, they announced its release to be September 25, 2017.[216] Like OS X El Capitan and OS X Mountain Lion, High Sierra is a refinement-based update having very few new features.[217] High Sierra uses the new Apple File System and includes enhancements to Safari, Photos, and Mail, among other changes.[215]
OS X El Capitan OS X El Capitan (/ɛl kæpɪˈtɑːn/ el-KAP-ɪ-TAHN) (version 10.11) is the twelfth major release of OS X (now named macOS), Apple Inc.'s desktop and server operating system for Macintosh computers. It is the successor to OS X Yosemite and focuses mainly on performance, stability and security.[2] Following the Northern California landmark-based naming scheme introduced with OS X Mavericks, El Capitan was named after a rock formation in Yosemite National Park, signifying its goal to be a refined version of Yosemite. El Capitan is the final version to be released under the name OS X; its successor, Sierra, was announced as macOS Sierra. El Capitan received far superior reviews when compared to Yosemite.