At the Paris Game Week conference, Bungie announced Curse of Osiris the first expansion for Destiny 2 set to be released on December 5th, 2017.
Destiny 2 – PGW 2017 Trailer | PS4
From the trailer, While you have been battling an ancient gate has opened on Mercury which an army of past and future machines is gathering. The intent of that army is to reshape the universe in their image. To answer the call you and a ledgendary Vanguard Commander named Osiris will lead the charge to murder all the robots.