PAX East Hearstone: Heroes of Warcraft site Hearthstone-style naming Hearthstone site Blizzard announced the next expansion for Hearthstone maakte her. Blackrock Mountain Blackrock Mountain will release in April Blackrock Mountain Hearthstone's website http://us.battle.net/hearthstone/en/blo ... t-3-6-2015 Hearthstone-style naming Blizzard announced the next expansion for Hearthstone can be found on Blizzard's official site. Announcement just announced a new expansion at PAX East official announcement Hearthstone site Hearthstone site Battle.net Blackrock Mountain, another one coming out in a month’s time