Livestream confirms it's basically Persona 6 but here's some interesting highlights:
- battle system is like kuro no kiseki. you can kill weaker enemies with sword slashes and go into full battles with stronger enemies.
- personas are now archetypes, and these are gained by interacting with people (social links)
- archetypes can be equipped on all the characters, so you can basically customize the party in a number of different ways
- they said that there are story dungeons and quest dungeons. I assume story dungeons are original while quest dungeons could be randomly generated.
- the music slaps