Blizzard's TCG, Hearthstone, has now officially hit retail release in North America. The game has been patched for release. Along with the news of the release, Blizzard also announced the World of Warcraft Hearthsteed for players who win three matches in the game.
Hearthstone is LIVE in NA! We're working on rolling out the patch to our other regions - hang in there if it's not live for you!— Hearthstone (@PlayHearthstone) March 11, 2014
You can check out more about today's release, including the latest patch notes on the Hearthstone: Heroes of Warcraft site.
As for the WoW mount, the Hearthsteed, Blizzard released this spiffy trailer: