Here's what Epic's Mark Rein had to say when asked of Unreal Engine 4 will run on Wii U.
"Hahaha no. I mean, sorry, it's not really a correct answer. We're not… we have Unreal Engine 3 for the Wii U. Right? And Unreal Engine 3 is powering all kinds of amazing games, still lots of games are being made with Unreal Engine 3. We announced today about a new Unreal Engine 3 license. Unreal Engine 3 doesn't disappear because of Unreal Engine 4. But our goal for Unreal Engine 4 console-wise is next-gen consoles. That's really what our energies are focused on. If you want to make a Wii U game, we have Unreal Engine 3, and it's powering some of the best games on the Wii U already. Nothing controversial, guys."
When Rein originally laughed and said 'no', the rest of the audience at GDC had a good laugh over it. Nice to know that journalists, devs and pubs all feel comfortable with laughing about the Wii U's support.