Katsura Hashino, producer of the last two Persona-games for the Playstation 2, has told the Japanese magazine Dengeki PlayStation that work has begun on the next Persona-game.
""We are preparing to start work on the next Persona. I want to add things that are being expected of the series. I also want to change things that can be changed within those boundaries," he said.
No word on when or on what format, that'd be a bit too good to be true I suppose, but we're guessing "in the future" and "Playstation 3". Pretty safe bets.