'Truther' Movie Coming, With Stars

According to this Guardian report, a movie suggesting some sort of wider conspiracy behind the 9/11 attacks--it's unclear what, exactly--is now in the works and Martin Sheen, Woody Harrelson and Ed Asner are on board.  It's titled September Morn.   One would like to see confirmation from the three actors. 

The story cites some of their comments on 9/11 in the past but it's always tricky--one can alleged "a coverup" but do you mean re:  the U.S. was in on the attacks or simply that officials suppressed evidence that we ignored warnings (e.g. "wants to attacks buildings with planes")?   But every time I read a reference to "Building 7" I turn the page.  Obviously, more to come.