From Diablo Wiki
Blizzard announced on 25 January 2012 that due to a very busy schedule there would be no Blizzcon in 2012 but the show will resume in 2013.
We’re excited to be showcasing Blizzard eSports on a truly global stage this year. We’re also heavily focused on getting Diablo III, Mists of Pandaria, and Heart of the Swarm into players’ hands as soon as possible. In light of our jam-packed schedule, we’ve decided to hold the next BlizzCon in 2013.More details about the 2012 Battle.net World Championship and BlizzCon 2013, including specific dates and locations, will be coming in the months ahead.
- No Blizzcon in 2012 - Blizzard 25/1/11
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