: 17G66 (original 10.13.6) or 17G14042 (final security update). Release Date

Searching for an is a common step if you're trying to set up a virtual machine (like VMware or VirtualBox) or create a bootable installer on a non-Mac system. Since Apple officially distributes macOS through the App Store and not as ISO files, you typically have to create the ISO yourself from the installer application. Key Official Details

: Includes AirPlay 2 multiroom audio support for iTunes and various stability/security improvements. Support Status : macOS High Sierra reached End of Life (EoL)