A while ago, a magazine “confirmed” that Call of Duty: Black Ops 2 would arrive on the Wii U. But despite the evidence, Treyarch has left their lips shut tight. For the moment, I suspect this is because Nintendo has a big reveal event planned for the end of September where they want to unleash all the news.
But just in case there was still doubt, the LinkedIn profile of an Activision employee has been updated with mention of the Wii U version of the game. This is definitely one of those “where there’s smoke, there’s fire” situations. I would be shocked if we don’t see an official announcement within the next couple of months.