The studio behind the upcoming Thief reboot, Eidos Montreal, are working on an unannounced next-gen title.
It's another lead discovered on the back of a LinkedIn profile, this one belonging to senior game designer Heath Smith (and spotted by Videogamer). It follows a similar story from earlier today where it was revealed that the next-gen Hitman by Square Enix Montreal had been shelved.
This one has been confirmed as an: "unannounced AAA 3rd person action adventure (PS4, XONE)" via the networking website, and an obvious candidate is the new Deus Ex title which is coming to next-gen consoles.
Smith's profile, and that of the same game's level artist, suggests that the project started in November of last year, in the wake of the completion of Thief and around the same time that the new Deus Ex was confirmed.