Apple today released the newest version of its operating system for Macs, macOS High Sierra, to the public. macOS High Sierra is a free download that's available today for everyone who has a compatible Mac. macOS High Sierra can be downloaded directly from the Mac App Store or through the Software Update function in the Mac App Store. Some users are seeing an error that prevents installation, so the update may still be propagating. macOS High Sierra is compatible with all Macs able to run Sierra, with a full list below: 2009 and Later - iMac (Late 2009) - MacBook...