COD Black Ops 4's Operation Apocalypse Z available on all platforms
Operation Apocalypse Z launched first on the PS4 on June 8th, but now it's also available on PC and XBONE. The Operation adds zombie enemies to the game and makes some changes to Multiplayer, Blackout and Zombies modes.
Multiplayer
Reaper playable in MP once unlocked at Tier 1 in the Contraband stream
3 Black Ops Pass maps: Der Schatten, Remnant, and Havana
Sticks and Stones party game mode
Map Pack Moshpit featuring Der Schatten, Remnant, and Havana
Zombies
“Alpha Omega” now available with the Black Ops Pass
New Perk: Blood Wolf Bite
2 Epic Elixirs added: Phoenix Up and Head Drama
New Black Ops 4 version of “Damned” music in the Zombies lobby
Support added for new Black Market weapons and new MKII Weapons
Blackout
“The Haunting Fog” and “Alcatraz: Nightfall” map updates
Quads Fog and Alcatraz Horde limited-time modes
Zombies Wonder Weapons now available in the Mystery Box
Outfit Mission added to unlock “The Numbers” Outfit for Reaper
Zombies-themed music now plays during infiltration
New Humiliations now available
Black Market
New Contraband stream including new Koshka Mastercraft at Tier 20 and earnable Ultra Weapon Bribe at Tier 40
Reaver C86 auto-crossbow, Argus shotgun, new weapon camos, MKII Weapons, Zombies-themed outfits, and more now available
You can learn more by clicking here (Treyarch's reddit post).