Well, last I heard they were developing game engines for WiiU that were set to make people believers in the next-gen capabilities of the console:
"Apparently Retro showed off their Wii U magic to Epic Games and got them to reconsider bringing Unreal Engine 4 to the system."
http://gengame.net/2012/09/rumor-retro-studios-is-working-on-game-engines-for-wii-u/
With that in mind, I would kill for Metroid Prime 4...







