Plain and simple: EA isn't working on any Wii U games following the delayed released of last month.
Following the departure of CEO John Riccitiello, COO Peter Moore told GameSpot: “We still have thousands of people focused on developing current-generation Xbox 360 and PS3 games, as well as people focused now on the next generation when that finally arrives.”
EA doesn't consider the Wii U to be next-generation or, but the sounds of things, current-generation as does not have a dedicated team working on any Wii U games.
Over six months before release, EA has already ruled out a Wii U release of Battlefield 4.
Source
EDIT by raulpica: News source isn't reliable. Thread locked.