https://www.pcgamer.com/turn-widowmaker-into-kerrigan-with-a-free-overwatch-skin/

March 31 will mark the 20th anniversary of the great RTS StarCraft, and Blizzard is celebrating the big birthday throughout the month with livestreams, reminiscences, and some commemorative stuff in StarCraft 2 and StarCraft: Remastered. There will also be, as we noted yesterday, celebratory goodies coming to other Blizzard games, including World of Warcraft, Diablo 3, Hearthstone, Heroes of the Storm, and—as of right now—Overwatch. 

Kerrigan, of course, would be Sarah Kerrigan of the Terran Confederacy, who later takes control of the Zerg Swarm as the Queen of Blades. It's all kind of complicated, but that's a good fit for Widowmaker, who's had a complicated life of her own: The wife of a former Overwatch operative who was turned into the ultimate assassin by Talon.