Looks nice, couple of questions...
These multi-home streamers tend to have a few underlying niggles which they may have kept quiet about the the demo.
1. Will it handle gapless playback? This is just about possible with uPnP (but not always). Linn added some (proprietary but open) extentions to produce OpenHome (http://www.openhome.org/wiki/Oh:Overview), but only Linn seem to use it.
2. I presume it does multi-room synchronous playback? This is hard to do reliably over wireless, especially if you also deal with issue #3. Sinos has this pretty well covered.
3. What is the buffering delay/lag like? AirPlay has huge delay, which means it's not much use for directly connected video. Linn get around this issue by reducing the delay (at the expense of reliability) for video sources.