Destiny 2's final Season of the Hunt mission is now live. It dropped out of the blue, and it’s called Coup de Grace, sending you on one last hunt to take down the High Celebrant. I hear it’s good, though also quite buggy at the moment.
The bug can be solved by not doing too much damage at any one stage and Bungie is recommending waiting a beat or two before shooting the blob that spawns the portal.
It was also a pretty fun little mission.