The Bluetooth Special Interest Group (SIG) has published the profile for upcoming Windows Phone 8 on its website, which reaffirms what has been previously extracted through scouring the leaked Windows Phone 8 SDK. According to the profile listing, Apollo will support the transfer of files between smartphones.
Moving up from Windows Phone 7.5 both the headset profile and serial protocol are missing from the specification read out, while Audio/Video Remote Control and Audio/Video Control Transport Protocol are sporting new versions, 1.4 and 1.3 respectively. To top everything off, it's Bluetooth 3 and not the latest version 4, which the Apple iPhone 4S already features.
Hopefully we'll be able to see Bluetooth in action soon with upcoming Windows Phone 8 hardware.