Apple introduced Metal 2, an updated version of its Metal graphics API. Metal 2 improved graphics performance and provided developers with tools to create more sophisticated graphics and compute tasks.
Apple released macOS High Sierra 10.13.1 on October 31, 2017. While it appeared to be a minor point update, it arrived at a critical turning point for the Mac operating system. macOS 10.13 focused on refining core architecture rather than introducing flashy visual changes. The 10.13.1 update served as the first major stability patch to cement these massive underlying shifts. macos high sierra 10.13.1