Well, I've been waiting for the game for quite a while and it's really worth the time.

User Rating: 10 | Persona 3: Fes PS2
This game might not have anything too much new for the battle system or anything to that point but the new storyline is quite stunning. You can play 'The Answer' which takes place after the events of Persona 3. The new dungeon is not too special but it's worth playing just for the storyline :p
As for the FES version of Persona 3 - there are (I think, seemed so to me) new cutscenes and a few new social links, outfits for the characters, new stores opened, weapon fusion and new personas + you can keep all your items from Persona 3 (Though on the key items.. I didn't have any of my weapons or any of my maxed out cash left :s ), oh well.. The difficulty is just right, tho I think I had to stay a little longer to get my lvl but I don't think it's an obstacle for a good game :)
If you haven't played Persona 3 - don't bother, buy P3 Fes instead, you gonna get an enchanced version of Persona 3 + a new storyline :p
I chose the 'Hard' on the enchanced version of persona 3 and still it's proven to be hard.. Played P3 for 180hrs and I'm not going to back out on P3 Fes ;)
This game should be in anyone's collection ;)