Call of Duty: Black Ops III players on the Nuk3town map are seeing a big alien ship destroy the level at the end of each match. It could be a teaser for the upcoming reveal of the next Call of Duty game.
As posted on YouTube channels like TheFriendlyMashing, the teaser definately shows some kind of alien craft appearing in the sky and detonating something that destroys the level, it then shows off a sci-fi logo or symbol. Previous rumors about the next Call of Duty game have claimed it will be set in the far future with space combat.
While publisher Actvision has not confirmed it, it's rumored that the game will be called Call of Duty: Infinite Warfare, and that it will be officially announced May 3 for a release date of November 4. A more recent report claims that the more expensive Legacy Edition of the game will include a remastered version of Call of Duty 4: Modern Warfare.