Bethesda plans to launch a game not yet announced in 2017

The Bethesda line-up scheduled for the end of the year really looks very rich yet there is an upcoming surprise: Pete Hines said during a recent interview with the YouTube channel Tek Syndicate.
We thought Bethesda had unveiled all his forthcoming games for the E3 2017 but reality looks different. In Pax West, Seattle, in fact, Pete Hines, VP of marketing and PR of the software house, in an interview with Tek Syndicate YouTube channels, announced that by the end of the current year a mysterious game that is not yet unveiled will be published.
Unfortunately, Hines has not given any further statements, so we do not know if this is a sequel to some series or an unprecedented IP. But one thing is certain, the official announcement related to the mysterious game should take place in the coming days, considering that the end of 2017 is not far away.
The most plausible hypothesis is that this is a new game specifically designed for mobile devices.
A few days ago, it was also leaked on the network a rumor that indicated the possible development of a title based on the famous TV series, Game of Thrones at Bethesda studios. The rumor came from a mysterious page on the popular website of Target, but a representative in the well-known shop later denied the leakage as saying that it was a simple mistake.
For the current year, Bethesda is scheduled to release Dishonored: Death Of The Outsider (September 15), Wolfenstein II: The New Colossus (October 27), The Evil Within 2 (October 13), DOOM VFR (December 1), The Elder Scrolls V Skyrim VR (November) and The Elder Scrolls V Skyrim for Nintendo Switch.