Eidos Montreal has confirmed that it's the developer behind the new Tomb Raider game's multiplayer mode.
Speaking via the team's official forums, Eidos community manager Meagan Marie wrote that Eidos Montreal "has been working away at the multiplayer while we focused everything on the single-player offering."
Eidos Montreal are the team responsible for Deus Ex: Human Evolution and Thief 4. Square Enix owns both studios.
More information will be announced soon.