While all three versions of the game will hit the US tomorrow, and the Xbox 360 and PS3 editions are set to launch in the UK this Friday, the Wii U title won't be out until April 26 on this side of the pond.
A Warner spokesperson confirmed the new Wii U release date to CVG this afternoon, but they didn't offer any reason for the delayed launch.
It was previously revealed that Wii U owners will miss out on Injustice: Gods Among Us special editions, which have been confirmed for Xbox 360 and PS3.
An Injustice: Gods Among Us DLC season pass has also been announced for Xbox 360 and PS3 but not Wii U.
Check out the Injustice: Gods Among Us launch trailer.