Hey, anonymous alcoholics! The X-Mas event is now going on in the game and the Krampus is out to spike your drink. There is a holiday-themed event, bot, and two achievements active.
The wintery forest is the holiday arena that features the Krampus. Beating him will unlock him as a playable skin as well as the forest as a playable arena. There are also six holiday drinks that you can mix up; doing so will earn you a fancy, festive achievement.
The Brewmaster expansion, which adds a whole new game mode, is also coming sometime in early 2020, so watch out for that.
Happy holidays!