A Korean flash-based mini-PVP called the Stormblue A9. Cool-looking little thing, but only available in Korea, and it's very bulky for a flash player.
Besides that, I haven't heard anything. So I think you'll have to wait awhile.
Does anyone know if any of the MP3 player companies are planning or have already come out with players that are bluetooth capable to use wireless headsets along with them? I know Logitech has a set for the iPod. Are there any non-Ipod version sout there?