Stephen King's It - October 3rd

[Marv Inc.]

The backers wont get anything extra they'll get the same BD as everybody else. Now Cult Screenings could get a BD of extra's pressed themselves similar to the exclusive disc that was offered for Crystal Lake memories but they wont.

The backers were supposed to get an exclusive online screening before it hit streaming which never happened.
Which they have never really addressed why it didn't happen. I suspect the US deal they made with Shudder prevented this even though they said less than a month before the doc went live the screening would happen.
By the time the the backers streaming happens I feel many wont care given how long it will have been on streaming by this point and other means of viewing it online.