The Wii U launch title is dropping the U from the name and heading for current systems with a few changes. With the obvious lack of the Wii U's game pad, there had to be some changes to the inventory system as well as dropping the "single system multiplayer" as it required zombies to be placed with the game pad.
Despite the multiplayer loss, there will be additions as to the game for all new players; added features like 2 new weapons, the shovel and the nail bat, as well as an expanded field of view that will allow for a little adjustment. Its looking to be a digital only title that will drop for PC, PS4, and Xbox One August 18th.
More info can be found found at Ubisoft's page for the game.