Its has been know for quite some time now that Persona 5 is in development, Altus has been very secretive about the game. For instance, we still don't know if it will be on PS3 following the trend of having a main series game on all of the past Sony systems, on PS4 and Vita as a next generation title, or if it will be a multi-platform game like Persona 4 Arena. Producer, Katsura Hashino reminded fans of the game once again last weekend at a Dengeki games festival broadcasted exclusively on NicoNico.
The video bellow shows Hashino thanking the fans and says that the team at Atlus is working very diligently to bring the next Persona game a reality. He also talks a bit about Persona 4 Golden. The video isn't subtitled sadly.
We haven't received much information regarding Persona 5 but since the Persona series is rather lacking in new games this year outside of Persona 4 Arena finally coming to Europe, it seems that a promotional video showing the main cast is in order. Only time will tell when they will reveal anything, bringing the mysteries of the next installment of the Shin Megami Tensei Persona series to light.