It'll be the original vision of the mega raid. Luke Smith originally pitched the original version of the King's Fall raid as "Crota's End + King's Fall" mixed into one activity. We're getting the original raid bc they've mentioned Crota's End not returning this year and I don't see it making a comeback as a raid or dungeon in the future... The 24 hour window will be extended too I'm sure. Lighteater Ogres will be champions I'm betting.