Thief 4 seems to be utilizing some form of online features, if the CVs of some Eidos Montreal employees are any indication. If these early hints are true, Thief 4 will be the first game in the series to go online. Details are scant, and online features haven't been officially announced. However, given the proliferation of online passes and DLC, it seems like a reasonable expectation these days.

Read more: 'Online tools' may not be online mode »

As expected, Deus Ex 3 developer Eidos Montreal today announced its second title, Thief 4, referring to the oft-rumored project as "the worst kept secret in the industry."

Few details on the stealth-action sequel were given--no word on specific platforms or a release estimate--with Eidos Montreal general manager Stephane D'Astous stating that it is "in the early development stages." Read more »

Word that Eidos Montreal is set to announce its second project has lead forum-goers to deduce that the title is likely the fourth entry to the company's revered series of stealth-action games, Thief.

Following its announcement of Deus Ex 3, Eidos last year hinted that the title of its second unannounced game begins with the letter "T"--prompting quick assumptions of Thief 4.

But according to a recent advertisement in Edge magazine, the upcoming title also resides on GameSpot's "Hall of Fame," "Greatest Games of All Time" and "Ten Best Heroes of Gaming" lists. As Kotaku points out, GameSpot forum members soon realized that Thief is the only game mentioned on all three lists. Read more »