Blizzard just announced that Whispers of the Old Gods would be available for purchase in Hearthstone on April 27.
This expansion brings 134 new cards and the Old Gods. You can check the expansion’s official website over here. If you haven’t been paying attention, you can still pre purchase the expansion bundle with 50 card packs and get an exclusive pre purchase card back. These card packs can be opened when the expansion goes live.
Blizzard will also be hosting a stream with Ben Brode (Lead Designer) and caster Dan Chou (Frodan) with matches against the Hearthstone design team and new card unveils. This can be viewed on the official Hearthstone Twitch channel on April 21 at 19:00 CEST.
Hearthstone: Heroes of Warcraft is available for free on PC, Mac, iOS devices, and Android devices.
Source: God is Geek