Let's face it. The 'Pub Games' downloadable pack of three Fable 2 mini-games was kind of a mess. Cheaters were able to utilize an exploit the ironically-named 'Tower of Fortune' mini-game in a way that would enable them to start the game with mountains of cash. Molyneux knows this, calling the exploit a "disaster."
According to Joystiq, who caught up with Molyneux at Gamescom, the developer wasn't willing to divulge any specifics as to what that "something" for Fable 3 would be, but did hint that, "It's more to do with this sort of thing," while seeming to refer to his mobile phone.
Fable 3 is due out on Xbox 360 on October 26, with the PC version to arrive sometime later.