Vex Void
From Destiny 1 Wiki
Vex Void is the 4th expansion for Destiny. It is scheduled to release in December 2015, after the release of Comet: Plague of Darkness, later in which was renamed and released, into Destiny: The Taken King, to kick off 2.0 and the second year of Destiny. Vex void is anticipated to give 1-3 strikes, 4-8 missions, a raid or a raid-like activity like Prison of Elders. Vex Void is then followed up by Forge of Gods, supposedly the Cabal DLC. Vex Void will come with very small, free expansions apparently the size of one or two missions.