https://www.polygon.com/2018/10/12/17966878/destiny-2-forsaken-warmind-curse-of-osiris-bundle-veteran

Destiny 2: Forsaken has been out a little over a month, and Bungie has decided to alter the way it sells the new expansion going forward. In this week’s blog post, This week at Bungie, the team announced that all copies of Forsaken will now come with Warmind and Curse of Osiris packaged in. This reduces the amount of content players need to purchase before jumping into Forsaken, as they can now simply purchase Destiny 2’s standard edition and Forsaken to be all caught up.

Previously, players were required to own Destiny 2, both previous expansions and Forsaken before they could play. This change to Forsaken will go into effect on Oct. 16, the same day Festival of the Lost, Iron Banner and the latest patch are added to the game.