"Dark and dystopian" title to mark the beginning of a new Deus Ex: Universe saga.
Thief 4 must equal or surpass the quality of Deus Ex: Human Revolution if Eidos Montreal is to cement its reputation, the studio's boss has said.
Eidos Montreal's Deus Ex prequel, Human Revolution, has sold 2.18m copies since its launch on September 30, Square Enix has reported.
Eidos Montreal has just stepped up and taken responsibility for the boss fights in Deus Ex: Human Revolution.
The Deus Ex: Human Revolution DLC, The Missing Link, will be arriving on Xbox 360 and PC October 18 for 1200 MS points and £8.99 respectively. PlayStation 3 owners will have to wait a day longer, also launching at £8.99.