Have you picked up your copy of the Pathfinder Roleplaying Game off of Paizo's website yet?
Well, why not? The Aplha Playtest version is free! Download it, give it a look.
It looks really interesting, to tell the truth. Wizards and Rogues get a higher hit-die. Clerics get to cast orisons at will. There are some other neat ideas in there, as well.
I think its a fantastic way to keep edition 3.5 of D&D around, when 4th edition makes its way to the shelves.