As pointed out by GAF, GameStop Italy is reporting that Watch_Dogs is no longer coming to the Wii U. Sure enough, if you go to their website you'll find the Wii U version of Watch_Dogs has been marked 'Cancelled' and had its pages removed. The PS3, PS4, 360, Xbox One, and PC versions are all still present and available for preorder.
We'll have to wait for confirmation from Ubisoft before knowing the game's status worldwide. Considering Watch_Dogs is the biggest third-party title coming to the Wii U, it paints a bleak picture for future support of the system. Thoughts, System Wars?