From Gamespot UK (via Joystiq):
Fresh-faced development studio Eidos Montreal is currently hard at work on its inaugural project, Deus Ex 3, but that doesn’t mean it’s incapable of multitasking — according to an ad in the upcoming issue of Edge Magazine, the studio is set to reveal its second project on May 11, which [...]

Technorati Tags: eidos,montreal,thief,deus ex
From play.tm:

“Eidos Montreal may have already confirmed they are working on Deus Ex 3, but there’s been a lot of conjecture surrounding the studio’s second project – which has been rumoured in the past to be Thief
4.
A job ad for the studio earlier this year hinted at the identity [...]