With Sonos Controller, you are able to play and stream different songs in different room or all same music in every room wirelessly from the tablet without requiring computer or dock. You can use it to control SONOS PLAY:3, PLAY:5 or other players running v3.8+. Hope it adds more different themes and the possibility of playing queues and multi-selecting.
The Sonos app comes with excellent tablet UI support and works perfectly on my Nexus 7. To search any artist, album or track, just speaking to N7 using voice search. I could use the volume buttons to adjust the individual volume on landscape mode since the upgrade.