The controversial filmmaker, who previewed footage on 'The Late Show with Stephen Colbert,' is teaming up with film exec Tom Ortenberg, to distribute 'Fahrenheit 11/9.'

Michael Moore announced the release date of and showed off footage from his upcoming documentary focused on President Donald Trump during his appearance on The Late Show with Stephen Colbert Thursday night.

The Fahrenheit 9/11 filmmaker revealed that the documentary will released Sep. 21 and confirmed that its title will be Fahrenheit 11/9, echoing that of his earlier 2004 film that took aim at President George W. Bush.

Veteran film exec Tom Ortenberg, who stepped down as CEO of Open Road Films last November, is in the process of launching a new company, Briarcliff Entertainment, and is partnering with Moore to release Fahrenheit 11/9 as a prelaunch project. Distributing the new film together will mark a reteaming for Moore and Ortenberg, since Ortenberg was at Lionsgate when that company released Fahrenheit 9/11, which remains the highest grossing doc of all time with $222 million in worldwide grosses, as well as one of Moore’s subsequent films, Sicko.

Though the director said that he “can’t reveal too much right now” about the documentary, he showed footage in which he attempts to gain entry into Mar-a-Lago in Palm Beach, or as he told someone as he attempted to enter, the “Southern White House.” He is shown being kept out by an iron gate at a door as the camera zooms in to see who is inside. “Just tell him it’s me,” Moore is heard saying to a doorman.

The footage echoed his 1989 documentary, Roger & Me, which established the director’s reputation, with its scenes in which he visited General Motors headquarters in an attempt to meet its CEO Roger B. Smith.

According to an official synopsis of the new film, “Michael Moore’s Fahrenheit 11/9 is a provocative and comedic look at the times in which…