Product specifications -
http://www.gpx2.com/product/product_spec.asp
The price of it is set to be cheaper than the current GP32.
They're publically advertising the fact that it can be used for emulation, aswell... Backwards compatibility, perhaps?
I'm not sure what to make of the specifications, but it's a damn sight more powerful than the GP32, and that could do quite a nifty bit.
Threaded Mode