Atlus has announced that Persona 5 will be releasing in Japan this September 15, 2016. It was previously announced that a western release will coincide with the Japanese date but there was no confirmation on this.
Persona 5 will be available on PlayStation 3 and 4. A collector’s 20th anniversary edition of Persona 5 has also been announced which comes with the PS4 game, DLC, art book and 5-disc sountrack from all five games.
There hasn’t been any confirmation for the west yet on the above collector’s but hopefully it will come. You can check out the new trailer below (in Japanese)