I have a pre-order for the Wii U also. I played a demo of the new Rayman coming out at a local Bestbuy, was pretty fun. I actually mostly watched while my daughter played around with it. Was the only demo avail to try out though.
I was a little torn on which system to get Black Ops 2 for.. I wanted to see how a hardcore FPS would do on the new U system, with that controller..so I ended up getting it for that. Not into the COD multiplayer, so that really wasn't an issue. I had the hardened edition on pre-order for the PS3.. but cancelled it.