The over-hyped but still good Fable will be coming to the PC before the year is out, most likely around Autumn time or thereabouts.
The new version will include more quests for the player to undertake, more lands to explore and more storyline to be engrossed in. Along with these additions will be more weapons, new armour and fresh spells to cast, along with new monsters to put it all into action against.
Oh, and it's been titled Fable: The Lost Chapters. That's your lot for now. More as we get it.