About 20 minutes ago, I received the email from Disney asking "Guests with a reservation at a Walt Disney World hotel between June 22, 2020 and July 4, 2020" to confirm, modify, or cancel their reservations by June 12th."
I clicked on "I'd like to modify." When I chose that, it directed me to call Disney, which I did. (I've been waiting to speak to anyone about this reservation until Disney reached out to us about it.)
When I spoke with the cast member he said that our Passholder discount precluded us booking into any other type of rate. I couldn't cancel and reschedule at even rack rate because there can be no new bookings at all, including rate type changes. He said, however, our rate was a bit of a moot point. He checked every resort on every arrival date in July (for 7 days) and there was absolutely no availability at the DVC villas associated to the resort we'd reserved (which was GF) or to any of the other DVC properties at all during the entire month of July. He said that out of about 50 calls this afternoon, he'd actually been able to modify reservations for only 2 or 3 guests.
I don't plan to call Disney several times a day and recheck to see if anyone has cancelled a reservation that we can pick up...,but that was his (only) suggestion for grabbing a different room in July. I didn't want to bother him with any questions about access to the parks for hotel guests or pass holders, so I didn't ask about that.
I realize it's one data point, but I thought I'd share my experience.