Not this year, it would have been a couple of weeks ago. Yes, the line up rotates as it's on Friday, Saturday and Sunday and then they'll swap and go between 2 sites, so any particular act will do Friday at Leeds and Saturday at Reading or whatever, but as a PP says, some smaller acts may only do one, but the headliners are going to do both.
Next year, they're making noises about having extra stages and more acts but whether or not it happens I don't know - obviously Covid has to properly go away, but there's the logistics to consider.
DP is in the industry and keeps saying they don't have the stages , equipment, crew etc to make it all happen, especially as a lot of people are desperately trying to find work in other industries as you've got mass redundancies and freelancers going off to do other things going on right now.
Not everyone will come back or stay in business, especially if it all stays shaky over the winter and at the beginning of next year's festival season.