Here are the primary changes in the library from the 6/8 update that just went live.
IP Highlights
Denon/Marantz Receivers: Updated for 1.5. Network/USB commands reorganized.
Onkyo/Integra Receivers: Updated for 1.5. Network/USB commands reorganized.
Pioneer Receivers: Updated for 1.5. Network/USB commands reorganized.
Yamaha Receivers: Updated for 1.5. Network/USB commands reorganized.
Serial
Panasonic TVs: Updated HDMI input selection codes.
To force your copy of Roomie to update right away, force quit Roomie by tapping the Home button, then double-tap Home to bring up the application bar, tap and hold the Roomie icon until a red minus sign appears, and then tap that sign. The next time you run Roomie, the library will automatically update.