Coinspeaker Did News of Blizzard’s Diablo 4 Occasionally Leak ahead of BlizzCon 2019?Blizzard’s new Diablo 4 game was expected to be announced at November’s BlizzCon 2019 but an ad for a related artbook seems to announce it earlier.Did News of Blizzard’s Diablo 4 Occasionally Leak ahead of BlizzCon 2019?