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BlizzCon returned after a two-year absence, with its opening ceremony delivering a wave of announcements across Blizzard's major franchises, including Diablo 5, a genre-shifting new StarCraft game, World of Warcraft Forever, a surprise Warcraft 3 campaign, Overwatch hero reveals and reworks, a new Hearthstone class, a new Heroes of the Storm hero, and an animated Diablo Netflix series.