Remember, no official word has reached us, this is just a leak off the latest Famitsu!
Found on baidu by pokedigi
Release Date: Jul 14th 2011
70 Songs, such as One Day (From One Piece), No Buts! (From Toaru Majutsu no Index), Monster Hunter Medley and IM@S2 (IdolM@ster 2) songs.
The Odoriko (dancers) of MHMedley will be renewed to MHP3's (Monster Hunter Portable 3rd, also on PSP and hugely popular at that). A group of IM@S Odoriko will also added.
People who order the game could get a card, permitted to download a bonus song which is the new song of the Angel Dream series. (can't wait to see this~)
We'll keep you updated as we get more!