The end of Persona 4 The Animation: The Factor of Hope teases an upcoming Persona 3 feature film.
The teaser appears at the end of Persona 4 The Animation. While it was done in traditional 2D animation, it did not specifically state that the picture would be live-action or an anime. It's safe to say that it's probably an anime. It's also safe to say it's probably not a dirty movie like that recent Persona 4 porno send-up. PHEW.