A post-credits scene at the end of Persona 3 The Movie #1: Spring of Birth revealed that the next film will be released in summer of 2014.
Persona 3 The Movie #1: Spring of Birth opened in Japanese theaters on November 23, 2013 and, at the end of the film, Aigis appears after the credit sequence along with the words “coming summer 2014” as a tease for Persona 3 The Movie #2.