Many of the biggest gaming events this year will take place online due to the risks of a pandemic. Despite the fact that many companies have decided not to cancel the presentations (like, for example, E3) - Blizzard will not host their BlizzCon this year at all. This was stated by one of the producers of the company, Saralyn Smith. "We don't want to waste too much time before meeting the fans again," Smith said. According to her, the company is planning something "unifying" at the beginning of 2022, however, apparently, it will be exactly the online format.
Unfortunately, Smith's words are likely to mean that there is no "live" meeting with Blizzard, as the producer mentioned the BlizzConline format as an example. Whatever it was, the pandemic is gradually fading away and the number of vaccinated is growing, so everything may still change.
Recall that the last major event for Blizzard was the winter BlizzConline, during which the company held separate online meetings for fans of different game universes: World of Warcraft, Overwatch, Hearthstone and Diablo.