In a recent interview with EA Sports Fight Night Producer Michael Blank he was asked if they were planning a version for the Wii this was his response.
"We’re talking about it right now. We’re contemplating and we definitely feel there are some exciting things we can do with the Fight Night franchise and the Wii. When you play Wii Boxing it is a very simple experience and I think that is what they designed it to be just to let you know that you can throw punches. With Fight Night we have an amazing simulation of Boxing and so we need to take those Wii controls and tailor it to what the Fight Night consumer might want to experience. We are looking at it right now and I am sure you will see something some time in the future on the Wii. We want people to get a bit of workout. If you like playing sports games and are excited by sports it is a good way to give you the best of both worlds."