All good and well
But can Microsoft and the manufacturers improve on the latency issues that airplay suffers from? If they can, this will make it a very strong answer to current bluetooth and airplay setups.
Recently I went on a somewhat OCD fueled exercise to reduce all cable clutter in my workspace - part of this was getting an airport extreme connected to my speakers. While I succeeded in my total desk cable clutter to a single thunderbolt, the airplay speaker component doesn't work as well as I had hoped.
Currently theres 3 seconds or so where airplay has to stream and buffer due to the fact it is transcoding at the source and decoding at the station. This is obviously a turn off if you want to use it where you want instant audio feedback that is not on a predetermined timeline eg. gaming. You are also at the mercy of your router as well, though wireless speed increases should help to solve these issues, I guess as with everything the technology will eventually mature wireless will probably replace cabled systems entirely.