Designer and programmer Tommy Refenes hinted at a possible Wii U port. He closed the post by saying "To the fans we're still excluding, I'll leave you with this: Wii haven't forgotten about U." Source
So it´s pretty obvious that is coming, better late than never! Now I really hope they don´t put the terrible music of the ps4/psv versions, but probably they will... Oh well, a really amazing game anyways.