Telltale Games’ Marvel based property is Guardians of the Galaxy according to a list of games affected by the voice actors strike. Previously announced back in 2015, Telltale said they were working on a Marvel IP but didn’t disclose which one.
— Telltale Games (@telltalegames) April 23, 2015
Now, it seems the mystery has been solved by SAG-AFTRA who listed a number of games that were affected by their ongoing strike. The list on the SAG-AFTRA website includes the game Guardians of the Galaxy: The Video Game a/k/a Blue Harvest. The game is attributed to O’Farrel Enterprises, LLC, the same company who has Telltale Games’ other title, The Walking Dead Season 3, attributed to it.
If it turns out this is merely a coincidence it would be very surprising. If it is Telltale Games’ next title, we can probably expect some kind of official statement in the near future to build on some of the hype.