Looks like current Airport expresses have been upgraded to Handle Airplay 2. If people are gung ho about non Sonos products that don't support Apple Music or Spotify within the app they should consider Airplay 2 devices everywhere. I'd be happy to start playing a song on iPhone then sending it to multiple speakers or amps. Does anyone know if multiple volume controls show up on iOs devices when multiple speakers are selected? To me this would be better than dealing with the other third party apps that can't deal with aggregating prominent music services ino their app.

Only down side is the music streams from the phone. Or does Airplay 2 allow speakers to stream music services directly from the internet like Chromecast does for movies or Spotify Connect for songs?