I am seeing a number of US-Europe Air France and KLM flights next summer for 50,000 miles (main cabin) when booked through Delta. The flights have to be on Air France or KLM planes -- Delta flights are much higher in cost. I was able to book four non-stop tickets Minneapolis to Paris next August for 50,000 Delta miles each plus ~$90 in taxes/fees. I found the same pricing on some dates for Minneapolis to Amsterdam, LA to Paris, and Seattle to Paris. It also looks like some itineraries connecting in AMS/CDG are available for the same price.
Per Delta's current terms, "Tickets purchased between March 1 and December 31, 2020, can be changed without a change fee or Award redeposit fees for a year from the date you purchased it." So any award tickets purchased by the end of this year are fully refundable if the travel situation does not improve. I already made one change to my flights and can confirm there were no change fees.
One more tip is that the award tickets book with AF/KLM flight numbers (not Delta codeshare flight numbers), so I was unable to select seats on the Delta website. However, using the record locator, I was able to select seats on the Air France website at no cost.