Hearthstone: Whispers of the Old Gods Announced, Cinematic Trailer

Ancient evil rises in third expansion for Blizzards internationally acclaimed digital card game
Whispers of the Old Gods, the third expansion for Hearthstone: Heroes of Warcraft, is coming to PC, Windows, iOS, and Android tablets in late April/early May, Blizzard Entertainment announced. Hearthstone: Whispers of the Old Gods will bring 134 new cards winnable in Hearthstone's Arena mode, and purchasable with in-game gold or real money at the same prices as Hearthstone's other card packs.
Starting March 14, and up until the expansion is released, you can pre-purchase Whispers of the Old Gods card packs in a special 50-pack bundle, on any platform, for a one-time price of $49.99 (one purchase per account). Whoever does so will receive a unique themed card back.