Continuing its annual event, Blizzard today announced that BlizzCon 2009 will be held at the Anaheim Convention Center in Anaheim, California on Friday, August 21 and Saturday, August 22.

As expected, the event will let attendees play upcoming games from the studio, including highly anticipated titles StarCraft 2 and Diablo 3. Attendees will also get to participate in discussion panels, tournaments and community contests.

Due to the popularity of BlizzCon, Blizzard has expanded the show from three to four convention halls.

“We’ve been amazed by the incredible response to each of our previous BlizzCon events,” said Blizzard CEO Mike Morhaime. “We look forward to this new opportunity to meet Blizzard gamers from around the world.”

More information is expected as the event draws closer.