Only thing is, the show will be called "Persona: Trinity Soul" and will be set 10 years after the events of the game. In the developing futuristic city of Ayanagi, there have been many incidents where undead known as "Reverse" have been found, named so because of their ability to disguise themselves as human beings. The story will centre around the 3 Kouzato brothers and will begin airing from January 2008.
The staff list is...
Director: Atsushi Matsumoto (Ghost in the Shell TV, Blood+)
Original Character Design: Shigenori Soejima
Series Writer: Yasuyuki Muto (Basilisk, Le Chevalier D'Eon)
Scripting: Nobusuke Oonishi, Shogo Yasukawa, Saya Matsuda
Anime Character Design: Yuriko Ishii (Darker than Black)
Persona Design: Genma Nobuhiko
Music: Taku Iwasaki (GetBackers, Witch Hunter Robin)
So in other words, it's just based on the RPG! Not a bad thing considering how the past MegaTen Anime adaptations hadn't been that great. They could potentially end up ruining the whole original P3 story if they went with it. Still, would be fun if we saw the original cast all grown up would it not?
In the meantime, if you want more of the original P3, you can enjoy the drama CDs such as "A Certain Day of Summer" with fan-made animations!