I've thought for some time that they will have to cancel again this year, unfortunately. The certainly won't be able to go ahead with their original dates, even if the lockdown easing goes completely to plan.
I would imagine it would be very complicated and expensive to shift to another weekend, but then again, I would imagine the hunger for outdoor music festivals will be great once they are allowed, and so who knows?
I would go - have been every year from 2008, and always have a great time, although I don't rate this years line-up too highly.