You can take it to the bank -- Eidos is working on Thief 4. Earlier this morning, a tweet from the official Eidos-Montreal Twitter account confirmed the existence of the title and also pointed its readers to the game’s official Web site, which has nothing more than a logo and a link to a discussion forum.
Information is limited, however, there is one thing we do know: the game is officially named Thi4f. We are now at the point of no return with the l33t stuff, folks.
So, we have a new Thief sequel. What do you want from it? As long as I can still crack skulls with a tiny club, I’m good to go. Well, that and the dismissal of the name "Thi4f," but that's a discussion I'll leave to you guys.