He's already overpromising on what he wants his game to have:

“I think that line in Fable – ‘for every choice, a consequence’ – wasn’t delivered on well enough,” Molyneux explained. “I think the possession mechanic that we had in Dungeon Keeper wasn’t delivered on enough. The open-world freedom that we had in Black & White, I think it was good at the start, but it didn’t deliver enough at the end. And Masters Of Albion is an opportunity to mix all those together."

And I’ll tell you the amazing thing – it’s going to fucking work. It really is. It’s like nothing you’ve ever played before, but it’s still unbelievably familiar. It is Black & White, it is Dungeon Keeper, and it is Fable, but it’s a completely new genre. And it shouldn’t really work, but it does.