https://www.gamespot.com/articles/overwatch-adding-new-map-50-items-and-more-to-cele/1100-6458917/

Overwatch was released two years ago this week. To celebrate the popular game's second birthday, Blizzard is holding an anniversary event that will include a new Deathmatch map, Petra, and more than 50 new cosmetic items to collect.

Among those are eight brand-new Legendary skins and three Epic-rarity skins. Additionally, Doomfist, Moira, and Brigitte are getting new dance emotes. What's more, all previously released seasonal cosmetic items, and "most" of the prior brawls for Arcade (on a daily, rotating basis), will be back for the new anniversary event.