More sadness: "Mostly" wireless guitars on PS3 (360 too?)

It looks like Guitar Hero 3 gets pseudo wireless controllers. They are totally donglified...okay, I apologize for constructing such an abomination of a word. Anyway, they will still be wireless, but one has to wonder why a dongle was required for a console that has Bluetooth built in? *confused*.

I wonder if the 360 controllers will need those as well?