October 28th according to Amazon:
This is supposed to be one of the Vita's heavy hitters for the holiday season (it's also a Sony first party game). The other being Tales of Hearts R, which is coming out November 11th. Also, Sword Art Online will be here August 19th and Danganronpa 2 is September 2nd. Also, the indie Vita exclusive Murasaki Baby is expected to be released next month. Those are exclusives only by the way, there's more. What do you think, Vita people?