Coming from a Joystiq interview with Team Ninja head Yosuke Hayashi.
"Of course, I think there are games that would be good for Wii U. So I think we need to still see what exactly those games they are and how you make a game for Wii U that is perfect for the Wii U. So if we get a chance to make a game like that, well, maybe we can think about it then. But right now we have no plans to port existing games to Wii U."