The Watch version now has automatically updated playlists and supports multiple playlists. (rainnews.com)
Other features are the ability to create multiple playlists from music in your profile as well as all of your friend's profiles, with one click shuffle of the entire collection of music from your BBM music community. (onemobilering.com)
Thankfully with watchOS 4, Apple now lets you load multiple playlists and albums onto the wrist - worn device. (appleinsider.com)