I've played the first two Fable games, which so far have been great.
I'm a big fan of the second Fable and have all of the DLC for it.
This is a game I am looking forward to, a brief summary of the game is here:
Molyneux has promised to remove traditional RPG mechanics from Fable III, the emphasis being on removing "clunkiness" and making the game more accessible. One of the most striking changes in Fable III is the menu system, or, rather, the absence of one. Citing the distaste of lists, the game lacks any semblance of a traditional 2D menu, instead relying solely on the game universe from the moment you hit the start button. Upon hitting the start button the player is transported to the Sanctuary. The Sanctuary is inhabited by your personal butler, Jasper, who makes in-game suggestions and advice. Changing clothes is now accomplished by using a changing room that features all of your wardrobe possibilities. Magic is now cast by gauntlets kept in the Sanctuary instead of changing them through the HUD, and shops contain their inventories on the shelves instead of in purchase screens.
There are rewards for being a self-serving ruler, including a treasury filled with gold piles that grow or diminish based on the player's wealth. When the player accumulates a large quantity of gold they will be able to climb it to retrieve a key on an otherwise inaccessible balcony. The player's in-game family will attempt to pressure the player into selfishly taking money from Albion to maintain and upgrade his or her castle.
Overall a great RPG which I can't wait to get my hands on.