According to an interview from Kotaku with Harmonix Co-Founder, Alex Rigopulous, Their newest Kinect based dance game, Dance Central, may not be an Xbox 360 exclusive. Rigopulous said that the team is looking into bringing Dance Central to the PlayStation 3 through the us of the new Move controller system.
Harmonix has never has any sort of exclusivity to one console, so it makes perfect sense to release their game on as many consoles as possible. Unfortunately for the Wii, players will not be able to pick up a copy of Dance Central. Rigopulous has stated that the Wii doesn't collect enough data through their motion sensing tech to work with the game as intended.
Using the move controls will most likely be quite different because of the move device, but both use cameras and could have body tracking. Either way, it's good to see Harmonix branch out and try for different variations on a new style of dancing game that actually highlights real dancing and choreography.