When I first met Urnenfeld, aka Oliver, back in 2005 (that was a great BeGeistert!), he was on his first stages of the Bluetooth stack, at the time for Zeta. A few days ago he updated his blog to let us know that the stack is getting closer and closer. He writes: "At the moment I have laying in a floppy disk what seems to be a beta version of a USB-Bluetooth driver. Waiting to be compiled, and start the debugging and testing stage."
A Bluetooth stack is a very welcomed addition to Haiku, helping expand the hardware support for the platform. So head over there and read his whole post. Good job Oliver.