https://www.polygon.com/2017/11/3/16604460/world-of-warcraft-pvp-player-versus-player-servers

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During the “World of Warcraft: What’s Next” panel at BlizzCon 2017, Blizzard revealed major changes coming to how it approaches player-versus-player content, particularly in the open-world. These changes will be coming as part of the game’s next expansion, Battle for Azeroth.