The Scoring Notes blog is keeping track of High Sierra compatibility updates for all the major notation editors…
Music notation software and macOS High Sierra:
Today Apple is releasing macOS High Sierra (10.13), the newest iteration of its Mac operating system. High Sierra’s most significant change is its use of a new file system, Apple File System (APFS), for computers with all-flash storage. High Sierra brings a number of other new features, too, but on this blog we’ll focus on its compatibility with desktop music notation software: Sibelius, Finale, Dorico, and MuseScore.