Call of Duty: Black Ops 4 has rolled out its December 20 update, and along with it a slew of new holiday-themed events and modes. Two pillars of the multiplayer shooter have gotten their own bit of eggnog and nutmeg flavor to ring in the season: a Blackout holiday event, Winter Calling in Zombies, and a Winter Event stream for the Black Market.

In the Blackout holiday event, Blackout players can use tactical Snowballs and holiday-themed supply stashes. The maps are also decked out with festive lights and decorations. In Zombies, you can complete some unique challenges for new exclusive personalization items. These special challenges can be accepted from the Barracks, and taken alongside your regular Daily Calling challenges.

Finally, the Winter Event Stream has come to the Black Market, offering some winter loot like warpaints and gestures. Those will appear in the Contraband section, and you can complete the new Winter Event tiers alongside the current Absolute Zero tiers to unlock scads of new loot.

Black Ops 4 is currently on sale at some retailers for $40, and Activision appears to be experimenting with letting players buy its pieces a la carte on PC. That means it's a relatively inexpensive time to jump in if you haven't yet. Read GameSpot's Black Ops 4 review for more on why, despite the lack of a single-player campaign, this is a substantial game.

Check below for the full patch notes from Treyarch.

Summary
Blackout Holiday Event: Snowballs, festive lighting/decorations, and holiday-themed Supply Stashes now live (Xbox One/PC)

Winter Event Stream in Black Market for MP and Blackout now live (Xbox One/PC)

Winter Calling in Zombies now live (Xbox One/PC)

Reactive Camo display issue fixes in Blackout

Enemy HUD fix for Killcam in Blackout

Dead of the Night added as Featured Playlist in Zombies

Misc. fixes in MP and Zombies

Xbox One and PC

General
Event

Limited-time Winter Event stream now live in the Black Market with new items to unlock for use in Multiplayer and Blackout.

Blackout
Event

Holiday Event now live in Blackout.

Added Snowballs, holiday lighting & decorations, and holiday-themed Supply Stashes.

Zombies

Event

Limited-time Winter Calling event stream now live with new personalization items to unlock in the Zombies Barracks.

All Platforms

Blackout
Reactive Camos

Addressed an issue that prevented unwrapped Reactive Camos from displaying as completed in the After Action Report.

Addressed an issue where unwrapped Reactive Camos would appear wrapped on the ground.

Outfit Unlocks

Addressed an issue with the unlock condition for “The Numbers” outfit for Seraph (PS4).

Miscellaneous

Contraband Stashes will now properly spawn on all platforms.

Addressed an issue that prevented the enemy HUD from appearing during the Killcam.

Multiplayer
General

Addressed an issue where “hacked” UI showed up for the rest of the match for players who watched the Killcam after being killed by a Gunship that was being hacked.

Zombies
Featured Playlist

Dead of the Night is now the Featured Playlist.

Gameplay

Closed an exploit that would allow specific uses of the Scepter of Ra to break enemy pathing.