With the rise of really control/stall heavy decks (C'thun, Nzoth) the game seems much slower. Of the games I've played since Whispers came out I haven't run into a really aggro deck at all.
Crypto Another neat thing is that with all these insane taunt cards (emperor vek'lor, the warrior 2/6 etc), The Black Knight MIGHT see some resurgence which is cool
BK is most certainly back. Tons of value taunts to take out now.