Paramount recently held sessions with writers to create a new direction for the franchise, with the new script being written by Art Marcum and Matt Holloway (Iron Man), along with Black Hawk Down scribe Ken Nolan.

Mark Walhberg, who starred in 2014's Transformers: Age of Extinction, is expected to return. Age of Extinction was a reboot of the previous three movies, but this new pic is expected to change gears as it attempts to create a greater cinematic universe for Transformers.

Bay insisted to Rolling Stone that this will be his last. "Transformers, I still have a great time," he said. "It’s fun to do a movie that 100 million people will see. But this is the last one. I have to pass the reins to someone else."

But Bay has said that before, only to return to the robots-in-disguise movies.

13 Hours opens Jan. 15.