There is an upcoming sequel to Wii Party coming to the Wii U this summer! Not much is known but you can spin some dice with the GamePad to move a certain amount of spaces on the board. There is also an interesting mini-game in which you'll have to press a lot of buttons. There is also a mini-game that has two players using one GamePad.
Also in other news Game & Wario has been confirmed to be coming out sometime in the spring!