An article was released yesterday in which director Ryan Murphy describes how the outcome of the film really isn't in any danger, stating:
"The Prom" was pretty much all shot.
We had two days of second-unit (filming) left.
"The Prom" was never going to come out until later in the year,
like Thanksgiving or Christmastime.
Hopefully, I'll be able to pick up those moments this summer. …
So, that movie wasn't really impacted by this
because I had already shot almost all of it."
I had to look up what "second unit" meant, and I guess it's where a second group of filmmakers work on supplementary footage like background shots, cutaways and inserts. It does not include direct filming with the main cast. I was also under the impression based on previous articles that the film was set for a third quarter release. Murphy suggests that it was always planned to be released toward the end of the year--which is good, since it now provides more time for completion. Add to that, since it's a Netflix film, there's not wide theater release to worry about getting mucked up. They only need a limited release for film awards chances.
At least we have one piece of good news during this awful time.