On Monday, DocterrificDoc made a post on Reddit to show that the loot boxes from the Overwatch Uprising event had the word "Archives" on them from day one.
The Overwatch Uprising event began in April and the event featured new skins, emotes, and sprays all based on the events that occurred in the past at King's Row. The event featured a new gameplay mode that re-lived Tracer's first mission. The horde style mission involved a team of Overwatch pros storming against an Omnic invasion.
Photo courtesy of Blizzard