The Ascendance DLC is included with the $50 Advanced Warfare DLC pass or can be purchased separately for $15. Below is a breakdown of what Ascendance includes.
Four new multiplayer maps: Perplex, Site 244, Climate, and Chop Shop.
Exo Zombies Chapter Two: Via Activision: "Located on the outskirts of an Atlas facility, the new Exo Zombies episode introduces a slew of never-before-seen undead masses, a robust arsenal of new traps and armaments and everyone's favorite fast food joint, Burgertown."
New weapons: The OHM directed energy light machine gun/shotgun hybrid and the OHM Werewolf custom variant. These weapons are available now for DLC pass owners.
New playlist called Exo Grapple: Via Activision: "Exo Grapple gives players a faster way to reach strategic vantage points or a brutal secondary weapon to take down the competition, exclusively on Ascendance maps."
Ascendance follows the Havoc expansion, which launched in January. Two additional expansions for Advanced Warfare will be released later this year: Supremacy and Reckoning.