Since yesterday, Square Enix has been teasing a new game via a three-day alternate reality game that was due to end tomorrow. Today, an early leak from a Russian website (as found by NeoGAF) has revealed that the big surprise is Deus Ex: Mankind Divided, a sequel to 2011's Human Revolution.
Mankind Divided is for PS4, Xbox One and PC, according to the leak. No word on a release date yet. We'll likely hear more about the game as soon as Square makes it official.