This information comes from Crytek CEO Cevat Yerli…

“Crytek’s support for Wii U is definitely going to happen. We aren’t showing it but we are pretty much running it already.”

Lets be honest, the Wii U will pretty much run any engine out there. It should not come as a surprise when a developer claims they got their engine working on the Wii U. Now the question is raised…is it the dumb down PS3/360  Crytek engine or the full-blown melt your computer engine?