Thief 4 announced

Eidos have revealed that a fourth Thief game, with the old school and so 90's smelling title THI4F is in development at Eidos Montreal. The same studio that is working on {Deus Ex 3}. Let's hope they change that before the game comes out, we are going to call it {Thief 4} regardless.

Official Thief 4 website

Perhaps we will get more information at E3, but Eidos already seem like they have a lot of titles to show in Los Angeles including {Deus Ex 3}, {Mini Ninjas}, {Kane & Lynch 2} and {Batman: Arkham Asylum}.