[cheesemaster]

The key here is the "ready" bit! Out-of-the-box it is wired, but you can upgrade it to wireless with an extra bit of kit (a Panasonic SH-FX70).

Still a bit of a cheat, in my opinion, as you have still have to wire your speakers to the rear receiver, it's just that you don't have to run the wires all the way from the head unit...