AFAIK, from what I played of it on the 360, it's some sort of beat-em-up with RPG elements. I never even knew this game was coming to PSN until Shiny told me. Since I seem to have some sort of weird fetish for PSN games over actual PS3 games, count me in (but I really don't have much free time these days)!
As for my PSN username, I'll give it when I can actually find a name I am happy with (tried well over 100 different words that are related to Persona and PSN and they're all taken).
Maybe I'll try and drag Zepy to play too!