Amazon has a listing for the upcoming Playstation 3 Bluetooth Headset. Price is $49.99! Yikes. That price includes a charging cradle and it should work with your cell phone, etc. According to PS3 Fanboy:
A new High-Quality (HQ) mode will use “advanced wireless technologies and the Headset’s dual-microphone design to enable clear and wide-band wireless voice communication with the PS3 system.”
(They don’t attribute the quote in that, um, quote.)
Of course, for $10 more you can buy SOCOM: Confrontation and get the headset and a game, which is what pretty much everyone will do, and that’s probably exactly what Sony wants you to do. $59.99 for a bluetooth headset and a game seems like a decent deal.