Some very exciting news was just revealed by Bohemia Interactive. A new multiplayer mode called “Zeus” is on the horizon for Arma 3, in the form of free DLC that is said to be arriving at the start of Q2 2014, according to their Twitter post.
From the official site:
Assume the role of game master and curate the experience of other Arma 3 players. Wielding an intuitive real-time editor, you can manipulate or expand multiplayer scenarios on-the-fly, and create a surprising flow of challenges for the soldiers on the ground.
See the official press release for more details.