Earlier today we learned the official release date of Persona 5 for Japanese users, however, following the announcement another big reveal came to the players and it is the official prologue anime show — Persona 5 The Animation: The Day Breakers.
Persona 5 The Animation: The Day Breakers is said to be a prologue episode that will launch just before the games release date in Septemeber, allowing players to learn the backstory of the game, and dive into a specific mission that our heroes, the Young Phantom Thieves take on.
The animation will be headed by A-1 Pictures and series director Katsura Hashino. The prologue will also consist of the main cast, and feature a certain "sub-plot" point of the main game which will then be carried over to the real game.
As of now, that is all the details that were given, however Atlus says they plan to share more at a closer date. Stick with GameZone for further updates.