During the live event of the Xbox One reveal, Don Mattrick, President of the Interactive Entertainment Business at Microsoft, said that within the first year the Xbox One will see 15 Xbox One exclusive games.
Of the 15 games, 8 of them will be brand new intellectual properties including a new title from Black Tusk Studios not mentioned during the on stage event. Immediately following the live event, Geoff Keighley – host of the Spike TV coverage – interviewed Mattrick who then teased the reveal of a new game coming from Black Tusk Studios during E3.
In post show interview, Don Mattrick says box is not "always on" and teases a new game from Black Tusk studio to be revealed at E3.
— Geoff Keighley (@geoffkeighley) May 21, 2013
If you too already counted the titles in development, the announcement and reveals of Forza Motorsport 5, Quantum Break and Black Tusk's new game, brings the list of unseen exclusives down to 12 and 6 remaining new intellectual properties still unannounced.
Considering that every Xbox One will come with the new Kinect, expect to see some of those titles to be Kinect games such as Kinect Sports or Dance Central.