https://www.gamespot.com/articles/destiny-2s-holiday-event-is-now-playable-on-ps4-xb/1100-6455748/

Destiny 2's holiday event, The Dawning, is now live on PS4, Xbox One, and PC. When you jump into the game, you'll be greeted with a winter makeover of the most-frequented spots and some new items to earn.

The Tower and Farm social spaces are the most wintry, with decorations and snow scattered throughout. But snow has also come to the rest of the game, and you'll be able to conduct snowball fights in the social spaces as well as on Strikes.