It looks like Whispers of the Old Gods will indeed be the next expansion for Hearthstone. Whispers of the Old Gods will be the third expansion for Hearthstone, and will be the first official set added to the new Standard format. The set will include 134 new cards, 4 Old God legendaries, and 16 cards (cultists) that intract with C'Thun. Whispers of the Old Gods has a planned release date of late April or early May.

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