The only card that wasn't released before was the Commanding shout
Just like the Warlock card, they release one new card, but pair it up with a couple of other already released cards to display combo potentual.
About the card itself, i really like it. It works well with the warrior style in a rush deck with Enrage ability, but it does leave your minions very weak for subsequent AoE shenanigans, or even just something like the mage ability to kill them off the next turn. Honestly i think something like the druid spell-card Demoralizing Roar (1 mana reduce enemy minions attack by 3 for one turn) Will give you a much better result in 90% of games for half the mana. But a card like that would most likely prevent all damage to your minions, where Commanding Shout will leave them close to death but enraged. Hard to tell how good this card is going to be.