If you went over to the official Hatsune Miku Project DIVA site earlier yesterday you would have noticed that the site interface has changed and also, news of a Project DIVA Version 2.5 (title tentative) have been made known. For more information on this do continue reading after the break!
Currently 4 songs for this new version of the game have been revealed, of which two were already in Project DIVA Arcade and they are listed below. It has been noted the new songs added will be replacing (almost) all songs in this game. (????????????????)
melody... by mikuru396
Iroha Uta by Ginsaku
Colorful x Sexy by Team MOER
SPiCa -39's Giving Day Edition- by TokuP
Moving on to the modules, Append Miku and the Append Kagamines will be available in the game together with Racing Miku 2011 as well as new modules for KAITO and MEIKO (to be named). The silhouette for a new Miku module is also shown (likely SPiCa).
This game will be playable on the PSP platform and scheduled to be released in Autumn 2011. Pricing to be known later.
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EDIT: trolololol images looked out of the place. fix'd
EDIT2: Derp. Probably no relation with Project DIVA Team's "New Project"