It just might load G-70 styles Donny. The GW-8 will ship with a Software Style Converter. Also with the GW-8 now having its sound engine based on the Sonic Cell and Fantom X along with the 4 intros/endings/variations.., it just may be possible. Here's the info off the Roland site:

Style Converter & Playlist Editor
Bundled with each GW-8 is Roland�s Style Converter software for PC, which lets you create and convert your own MIDI data into GW-8 backing styles and install them via commercially available USB Flash memory devices. Also included is the Playlist Editor for customizing the order of songs. Users can easily create a dedicated Playlist for each gig.