Edit Page Last Edit: May 23, 2017 - 3 months 12 days ago. The Anniversary Update launched today for Overwatch. Celebrating 1 year of release, this update brings in new maps and loads of new skins and other cosmetic items. This event begins May 23rd and will run until June 12th. EditNew Maps & Modes. There are three new maps being added, although currently they are only available under the Elimination game mode.