The Overwatch 3.11 update patch notes welcome in the game’s fifth birthday. The 2021 Anniversary event is the biggest segment of the update as it adds more skins to the returning event, some of which have already been spread around the internet. And while the skins are the big draw, there’s not much else as the May Overwatch update does not contain any balance changes or additional features. Overwatch Anniversary event start and end date The Overwatch Anniversary event starts on May 18 and ends on June 8. This gives everyone three weeks to enjoy the game’s birthday celebration and all of the new cosmetics and skins it adds. Each will bring back a brawl from another event. Lucioball is the first week, Junkenstein’s Revenge will be the following two weeks, the Winter Wonderland brawls are the next week, and the event will wrap up with the Year of the Ox Arcade modes.