Yeah perhaps Bandai Namco wanting to stay in Nintendo's good graces (bet that Smash Bros. and Pokken development $$$ was fairly nice) and is trying to find other IP on the Wii U that they could possibly sell.
So perhaps they picked up the Zombi U brand from Ubi Soft? Stranger things have happened. It would probably sell better than another Tekken.
That said this is probably fake.