Graynomad:
something that can actually handle some more intense rendering/graphics?
The SAM is probably not the best ARM choice for high-res graphics rendering, many ARM chips have LCD interfaces built in and the SAM doesn't. I would not expect to get 3D rendering in anything like real time, but I don't think that's what Arduino users need from a board. The sort of thing I reckon people would like such as bar graphs, soft instruments etc would be a walk in the park for it.
Rob
i was thinking more along the lines of simple comps (maybe taking advantage of alpha channels/transparencies) and possibly animated icons. something that would make a really amazing UI.