Same boat here. Got my coach tickets immediately after booking in 2019, and filled out the submission request form in March to have my tickets saved for 2021. I haven't heard a peep from NE since then.
I picked an early coach (1AM) so i'd have a shorter line at the gate and dibs on camping spots. I was worried the coach tickets would be offered to existing customers first if I took a refund, leaving me with the dregs.
I assume they aren't going ahead until Eavis releases an official statement that the festival is happening. This may be internal report though, so I'll let you know if I hear/see anything from NE.