Diablo 4 Midwinter Blight Event Underway

The event, available only for seasonal characters, offers new quests, rewards, and an upgradeable event hub in the Fractured Peaks region.

Diablo 4's first holiday event, Midwinter Blight, is a winter celebration taking place in the Fractured Peaks region, running from December 12 to January 2, 2024.
Players can take on new event quests, upgrade the new event hub, challenge a new event-specific boss, and earn event-specific rewards including a bunch of new cosmetic items.
Special blight enemies appear in the areas, along with special events. Defeating these enemies will let players unlock new limited rewards, including cosmetics and a legendary aspect.
The event-specific area, Midwinter Square, will allow players to build it up and upgrade it as they slay new Blightfiend enemies around the Fractured Peaks.
The event is only available for seasonal characters, and not for those playing on the Eternal Realm.