Outbreak was introduced into Cold War back in February 2021, as part of the Season 2 update.
This large-scale Zombies experience is hosted on Fireteam maps set in the Ural Mountains.
Like any Zombies mode, a main Easter Egg quest is always present. While this feature wasn't added to Outbreak at launch, it's now being implemented thanks to the Season 3 Reloaded update.
When Does The Outbreak Easter Egg Go Live?
The Outbreak Easter Egg is going live at 10AM PT on Thursday, May 20th!
Treyarch refers to this as "our first Main Quest in Outbreak". This confirms that the Easter Egg is going live at this time, but also hints at the fact that more are on the way in the future.
Be sure to grab your squad and get ready for the Easter Egg when it goessive at 6PM BST.