It says nothing on the RAM, as most games availlable on console run on PC too with improved texture quality. Anyway I would more willingly put my bet on 1GB of RAM. For the GPU something close to a 4670 wold be fine. Not outstanding but fine. It would be a nice increase in shading power but onsistant jump in regard to texturing power.This suggests to me:
512 RAM
Slightly more shaders (320).
Using all the work for other platforms=same assets=same RAM.
Use all the capacity of Wii2=bolt on slightly better shaders.
All falls in line with my predictions, 320 SP HD4670, 512 RAM.
Actually the whole thing is so elusive that it's hard to come to a conclusion.
It will do well? As the 3DS?