Onkyo just sent me the 2010 AVR compatibility list of ISCP commands!
New features supported on the 2010 model AVRs:
1. Send Album Art over ethernet (net mode)
2. Menu controls! You can get the menu list items now! (net mode, iPod mode)
These are only on the 708 and higher model receivers. We 807 and up owners are just plain out of luck.
Better Freq entry for Tuner
Video Playback available in iPod Extended mode (not on remote device, but on television)
Picture modes: Wide, Zoom, Cinema, Game etc.
HDMI Audio out controls