A gameplay trailer for Call of Duty: Black Ops 3 - Zombies Chronicles has been released, so give it a watch.
Nacht der Untoten, Verruckt and Shi No Numa from World at War; Kino Der Toten, Ascension, Shangri-la and Moon from Black Ops; and Origins from Black Ops 2 are all included.
This DLC is digital-only, and requires a copy of Call of Duty: Black Ops 3, obviously. As a bonus, anyone who purchases Zombies Chronicles will receive extra goodies which were detailed in a previous post.
Zombies Chronicles releases on May 16, first on PlayStation 4. For eight days beginning with release, Treyarch will host an '8 Days of the Undead’ event for all Black Ops 3 players on all platforms.
This includes double XP, a new calling card, weapon camouflage, new GobbleGums, and more stuff.
Call of Duty: Black Ops 3 - Zombies Chronicles will run you $30 or the regional equivalent. It's expected PC and Xbox One players will be handed the content once the usual 30 day exclusivity period ends.