https://www.polygon.com/2018/4/11/17226884/destiny-2-expansion-2-warmind-release-date

Bungie will release the second expansion for Destiny 2, an update to the game titled Warmind, on May 8. The developer announced the Warmind expansion’s release date and name in a very low-key fashion — as part of an updated development roadmap that covers seasons three and four of Destiny 2.

Destiny 2 season three will kick off with the release of the Warmind expansion. Bungie said Warmind “will send you to new places to meet new heroes and battle new enemies. You’ll earn new loot and master new activities.”