Blizzard is teasing the announcement of a brand new Hearthstone adventure. In a blog post on the official Hearthstone site, Blizzard announced that a livestream will take place on July 28th at 11 pm pacific time, and will show off brand new content for the game. Many speculate the new adventure content would focus on the World of Warcraft raid Karazahn which was released during the Burning Crusade expansion. Karazahn is a highly beloved raid in the World of Warcraft community that contains imagery like ballrooms and palaces. The livestream will be watchable on Blizzard’s official Hearthstone twitch channel.
Source(s): Hearthstone Official Site