Coming to the PlayStation Vita in July is a brand new Vocaloid game featuring the beautiful IA. IA/VT Colorful (IA Visual Tracks Colorful) is a new rhythm game developed by Marvelous AQL that will contain more than 60 songs. It will play differently to Hatsune Miku Project Diva F 2nd, which just released on the vita, and other standard rhythm games. The game will be releasing on the Vita in Japan on July 31st, with DLC support after its release. It will cost ¥4,800 (~ $48 USD) for the standard edition and ¥ 9,240 (~ $92 USD) for the limited edition. There has been no Western release announced.
You can read more about the game here.