The official BlizzCon twitter feed has announced that they have begun to mail out this year's barcodes to BlizzCon attendees, so if you're attending the convention, keep an eye on your inbox.
You'll need to print out the e-mail and present it during registration in order to get your BlizzCon badge and goody bag, so don't forget it! BlizzCon 2013 is November 8-9th at the Anaheim Convention Center in Anaheim, California. Right across the street from Disneyland, if you get lost! From all of us at the WoW Insider crew, we hope to see you there!