BlizzCon 2011 begins tomorrow, and you’ll be able to watch the opening ceremony and the action on the World of Warcraft and RTS tournament stages streaming for free at www.blizzcon.com/live-stream/. DIRECTV subscribers in the U.S. can also catch the opening ceremony for free on the Audience Network. Pre-show coverage begins Friday at 10:30 a.m. Pacific, and the opening ceremony is scheduled to start at 11 a.m.. Tournaments run throughout both days of the show — check out the BlizzCon schedule for details.

If you’re interested in watching these in high-def and getting over 50 hours of BlizzCon coverage, including developer panels, the costume contest, the closing concert with Foo Fighters, and more, you can still purchase a BlizzCon Virtual Ticket, which also includes this year’s World of Warcraft pet and to-be-revealed StarCraft II in-game gift. The Virtual Ticket also lets you watch on-demand replays of any coverage you might have missed.

We’ll be updating BlizzCon.com, our Twitter feeds, and our Facebook pages with news, photos, and more from the show, so we’ve got you covered pretty much anywhere you go. See you at BlizzCon!