According to Blizzard, “This year’s show will once again commence with the esports action of BlizzCon Opening Week, taking place at Blizzard Arena Los Angeles from October 25 to 29, where the initial rounds of the StarCraft II World Championship Series Global Finals, the Heroes of the Storm Global Championship Finals, and World of Warcraft Arena World Championship Finals will unfold. The competitions will culminate in Anaheim on November 2 and 3, where the champions of these tournaments along with those of the Overwatch World Cup and Hearthstone Global Games will be crowned.”
BlizzCon is also usually a venue where Blizzard announces new games and also updates on current ones. Many gamers have been hoping to hear more about the future of the Diablo franchise with rumors swirling about that there could be a Diablo 4, although some analysts have predicted that Diablo 4 might only arrive in 2020.
It is possible that the game could be announced this year and released a couple of years later, which is usually how Blizzard does things, but in any case perhaps it’s best not to get your hopes up just yet.