Eidos Montreal has officially announced Thief 4, following a media leak via a Russian website today (see screenshots below).
Called simply 'Thief', the stealth sequel will release on PC, PS4 and "other next-gen platforms" in 2014.
According to US mag Game Informer, the Eidos Montreal title sees series hero Garrett return to the Gothic, industrial metropolis known simply as the City, looking "to steal any and everything that will make him richer."
The story blurb continues: "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."
In its official announcement, Square Enix promises a "first-person adventure featuring intelligent design that allows players to take full control, with freedom to choose their path through the game's levels and how they approach and overcome each challenge."
[UPDATE: The first Thief 4 gameplay details have emerged via US mag Game Informer]
Eidos Montreal's general manager, Stephane D'Astous said of the game: "We're handling a precious gemstone with Thief. Fans remember the original games very fondly and we want to preserve that essence - which we have excellent experience of doing at Eidos-Montréal - whilst also introducing Thief to a brand new, next-generation, audience.
"Our goal is to deliver the fantasy of being Garrett, THE master thief, and we're building this game around that core experience."
Thief 4 is said to have been in development for four years, having been originally announced to the public in May 2009.
CVG sources indicated the game had been moved to next-gen platforms last year.
Speaking to OXM last April, Eidos Montreal's D'Astous claimed the series revival would "bring more than just stealth".
"We have more international staff working on Thief, which brings a great flavour to the game," D'Astous said. "There are a lot of challenges to bringing back a great cult IP, but we consider it like a new IP and we are going to respect the spirit of the franchise like we did with Deus Ex.
"Deus Ex was the kick-start of this new series of great games, and Thief will be part of that, and Thief will be part of that. We don't want to deliver the same each time. Our mandate is to bring new stuff to the table; games that we'll be talking about for years."
See the first Thief screens below.