Taken from duckroll: "It's a port of Persona 3, with selectable protagonist. There will be certain things unique to the female route, and there will be some new additions to the male route as well. Otherwise it's the same game with various improvements. Apparently there'll be 5 difficulty levels, and like in P4, you can set your party members on manual control. The game is coming out on 1st Nov."
Rather than make a new thread, I figured I'd bump this one. Just got an alert from my phone that I had a new e-mail and *gasp* it was Atlus announcing Persona 3 Portable coming to the US in early July.
I'll have to check this game out, and since it is being published by Atlus over here, I bet there will be a Free Soundtrack when you either pre-order or just buy the regular copy.