Same as other consoles
Zen Pinball 2 was delayed on the Wii U, despite the fact that it was originally going to be a launch title. After some deliberation, some fans speculated on the price, saying it would be higher due to the new functionality of the GamePad.
Well there you have it. No price hike or price cut involved -- just the same as everyone else. Are you satisfied? Me, I'm just happy to be getting any Wii U eShop games. Can we expect Pikmin DLC now, Zen Studios?
An Ode to the Release [Zen Studios Forums]