I was pleasantly surprised to find out that upgrading to iPhone OS 3.0 enabled previously hidden Bluetooth functionality on my second generation iPod Touch. After upgrading (the iTunes servers were jammed so I did it after midnight) I noticed a small Bluetooth icon in the upper right hand corner of the home screen. So I went straight into Settings->General and ... what do you know, Bluetooth.
The only Bluetooth device I have is a headset for my Motorola KRZR cellphone (no iPhone yet) so I resorted to trying to connect from the kids iMac. While I can't do anything useful with it (yet) I expect we will see a host of new accessories for the iPhone 3G(S) and iPod Touch 2G. I for one would like a Bluetooth car kit to wirelessly stream music from my iPod Touch. Perhaps maybe sync my iPod without docking.
I noticed that one of the services available on the iPod Touch via Bluetooth is something called AVRCP. According to the official Bluetooth web site AVRCP:
AVRCP is designed to provide a standard interface to control TVs, hi-fi equipment, or others to allow a single remote control (or other device) to control all the A/V equipment to which a user has access. It may be used in concert with A2DP or VDP.
I can't wait!!