Blizzard will be dropping patch 17.6 for Hearthsone tomorrow (July 14). While the patch isn’t all that big, it does make important balance changes to some of the cards in the game. For instance, Dragonqueen Alextrasza’s Battlecry now requires a cost to add Dragons to the player’s hand. Other cards have received the same treatment.
Several cards also see a reduction in either damage dealt or the card’s health. And yet other cards have seen a one point cost increase. The patchnotes can be found in full on the Hearthstone site. As noted, there’s nothing beyond the general balance updates, so it shouldn’t take more than a minute to look over.