Today, Apple released a new version of iTunes for OS X that accommodates its new MUSIC service, comprising: Beats 1 global 24/7 radio; algorithm- and human-curated playlist streams (replacing iTunes Radio); "Connect", the social media component; and the ability to play tracks streamed from Apple's music catalog alongside your current library tracks.
Apple did not make the new iTunes app available to developers before its official release and, of course, the Apple Music services weren't available until today either. So I had to wait like everybody else to see what AppleScript changes may have been wrought upon the latest iTunes app. I'm primarily concerned with still being able to manage my own media library with AppleScript and, if possible, accommodating any streaming Apple Music tracks that I may mix in with them.
There are changes in iTunes 12.2 that will require several if not many scripts and apps to be updated. This is going to take me some time to ascertain, but I will report the issues when I have figured them out.