Edit: It’s been confirmed that the update is only for the UK version. The US version will be released on schedule.
It looks like Injustice: Gods Among Us for Wii U will be launching on April 26th instead of the April 19th release date for other version of the game. CVG originally reported that Warner Bros. Interactive decided to delay the Wii U version of the game, but no reason has been given for the delay. It’s worth noting that a season pass for DLC has already been announced for both PlayStation 3 and Xbox 360 versions, but not for the Wii U.
We’ll keep you up to date if any more information is released concerning the delay.