during this weeks OSL (outsparklive) Silky and Murdock talked about it some. its going to be a really cool dance game. (apparently ALOT better graphics than Audition [i asked that question ;3] and its not going to be like all of those ddr games. they also said they are gonna have really good music.
OSL:
http://outsparkclub.net/live/episodes/6/
you can skip to around probably 16 mins through i think