Thief 4 will be released on the PC and next-generation consoles (PS4 and the next Xbox) sometime in 2014. Below are the first official screenshots.
More screenshots after the page break..
“Unfortunately, the City is broiling with social tension as it is ravaged by a plague and lorded over by a political tyrant known as the Baron. In order to survive his adventures, Garrett will have to pay attention to his environment and make use of the may possible paths through each of the game’s levels”.