https://www.gamespot.com/articles/destiny-2-curse-of-osiris-raid-lair-launches-this-/1100-6455439/

Bungie has announced the launch date for Destiny 2's first-ever Raid Lair, and it's coming up quite soon. Curse of Osiris owners will gain access to the new Raid content later this week, and much like the release of a proper Raid, Bungie will monitor attempts to become the world's first team to complete it.