In addition to a “momentous announcement” by Blizzard, the livestream and live show will also include special Hearthstone matche

s and some shop-talk with game designers Rachel Quirico and Eric Dodds. Community hot-shots Frodan, Kripparrian, Trump, Amaz, and World Champion Firebat will also be available to gawk - er - talk at.

Speculation has abounded since Blizzard first made the pre-announcement last week as to what this “momentous announcement” might be.

Favored theories include a new expansion, possibly Argent Tournament or Icecrown themed, while others include increased deck slots, new forms of Tavern Brawl, and improved spectator mode. Whatever Blizzard has plans to announce, it’s big enough to have warranted its own announcement - complete with superstar cast.

Tune into http://www.twitch.tv/playhearthstone/ today at 2:30pm PST (5:30pm EST) to hear what Blizzard has in store next for Hearthstone, and enjoy the show. If you live in the Bay Area, head on down to the Folsom Street Foundry at 1425 Folsom Street and join in the festivities - but plan your trip early, space is limited!

What do you think Blizzard has planned for Hearthstone? Speculate in the comments below!