I'm taking a bit of a leap here, but...
The last rumors I read were that initially, MK, HS, and AK would reopen, but Epcot would remain closed until later phases of the reopening. Hours would be reduced and no evening performances (fireworks, etc) would run.
Just looking at ADR availability for the parks, I think we can infer that the current plan is for MK, HS, and AK to close at ~6pm with no evening performances, since no HEA/Fant/RoL packages are available. Epcot's currently the outlier, in that some restaurants have availability beyond 6pm and the R&C dining package is still available, but not all restaurants have availability after 6pm. It could be that some restaurants there are reflecting the reduced hours/availability, and others are not. If Epcot isn't even open come November, it's all moot anyway.
What's the benefit of cancelling the evening performances? I did find SciFi Cafe having a post 6PM appt but yea, there's literally nothing but Epcot. I think it's all speculation at this point. I was told by WDW Help Desk that the only reason why the calendar is outdated is due to lack of staffing but that doesn't make too much sense giving the important and how is that a manual process.