Yeah, the game started off as a Wii U exclusive. They delayed it a bit to work on it more, that's cool (Wii U was in a drought though so it would have been good to have). They announced other platforms were getting it. Fine. The game was due to be released in... what was it... weeks? They announce they are delaying it to release at the same time as the other versions.
Ah. I keep forgetting that the Wii U version came out at the same time as the PS3 and XB360 ones. My brain tells me it came out first because it was originally supposed to be exclusive and the PS4 and XB1 versions obviously came out later. Stupid brain.
Regardless, it's one of those games that I'm eventually planning on picking up for the Wii U even though I could have gotten the 360 or XB1 versions. It's supposed to be better on the Wii U with that very pretty gamepad controller.