[Link: strata-gee.com][Link: strata-gee.com][Link: strata-gee.com]Actually, there's a LOT of coverage on the strata-gee website, best just search Sonos and do the reading. It's not looking great for Heos at this point... some of the original Heos marketing approach did smack of 'copy not innovate'. Others have come at the multi-room angle from a different perspective, only now are Denon / Marantz doing something different by integrating into their AVR's.
Although, that could be viewed as copying Yamaha's MusicCast system.