According to the Delta Airlines blog, Delta is investing a significant amount of money into upgrading and conditioning the cabins of their planes. Among the upgrades:

90 trans-oceanic aircraft will be updated with full flat-bed seats, adding the ability to stretch out and relax in our BusinessElite cabin on all Boeing 767-400ERs, 767-300ERs, 747-400s and 777-200ERs.

Those seats look like the ones from the A380.

I don’t know about you, but these changes will have no effect on whether I chose to fly Delta again or not. Personally, I hate Hartsfield airport, so if I can avoid it, the better it is for me.