Ubisoft's response about putting Watch Dogs on Wii U during E3 2012:
http://www.ign.com/articles/2012/06/07/e3-2012-watch-dogs-coming-to-consoles-and-pc-could-hit-wii-u
Yea I figure once they got all those WiiU launch games out they would move one of those teams to Watch_Dogs on WiiU, prob the AC3 WiiU team working on it.