https://www.polygon.com/2018/9/4/17819362/wow-battle-for-azeroth-mythic-loot-chest-early-release

World of Warcraft’s new Mythic+ dungeons are finally here, but some players are getting high-powered gear from them way too early.

The Mythic+ system was a new feature during WoW’s last expansion, Legion, and it encouraged players to try to complete the game’s dungeons as fast as they possibly could. The faster they completed one dungeon, the harder the next dungeon would be and the better the rewards. At the end of each week, players would receive an extra high-level item for the hardest dungeon they managed to complete.