According to the folks at Entertainment Weekly:
"After years of publicly questioning the events leading up to the terrorist hijackings of four American airliners on Sept. 11, 2001, Charlie Sheen will star in a dramatic interpretation of that fateful day."
"Atlas Distribution announced Tuesday it has set 9/11 for a wide theatrical bow on Sept. 8, 2017 — just three days shy of the 16th anniversary of the attacks. Based on Patrick Carson’s stage play Elevator, the film recreates actual events adapted from voicemail messages left by victims. The story follows five people trapped in an elevator inside the World Trade Center’s North Tower. The group works together to find hope amid seemingly inescapable circumstances."
Welp. This is an interesting turn of events. Not only have you got longtime Truther Charlie Sheen headlining a dramatized retelling of the 9/11 attacks, but dude's accompanied by a truly bizarre cast (Whoopi Goldberg and Gina Gershon and Luis Guzman and Charlie Sheen?) in a film directed by the guy who made My X-Girlfriend’s Wedding Reception (???) and being released by a company I've never heard of before right now. Also, that poster is literally impossible to look at without laughing, which is almost certainly not what they were going for when they put that thing out into the world.
Anyway, yeah, 9/11 arrives on 9/8. Can't wait for the first trailer.