If November happens, the GvK date, Bond is surely gonna move to Nov 11 in line with OS release. And Widow possibly goes a week early like OS release...or both just get pushed to 21?
And yes, June 2021.
Most of the world's theaters should be opening up - as in governments will let them - by July. The question is will the US (LA, NY and other major metropolises) and the UK (currently set for July 4).
And of course the factor is if WB/Nolan grow a conscience and realise when Trump/Johnson says things can open, they kinda should not...