The spoilers have slowed right down again, and it seems probable that there will be no more until the live stream tomorrow. This article will cover Princess Huhuran, Dark Arakkoa, and Shifter Zerus, bringing the total number of revealed cards to seventy one.
Princess Huhuran has great stats for a 5-drop with an ability, and it seems very likely that she'll see play in Standard because of this. The interesting part will be how much importance will put on her ability. While she is obviously a card you can build a deck around, it might be that she is used with just a few Deathrattles, rather than trying to force too much additional value. Cards like seem natural to try with her, while more greedy cards like will require more thought and testing.
Dark Arakkoa is another card that has a decent vanilla style stat line and then a buff. I'm still very much on the fence about how powerful C'Thun decks are going to end up being, but I'm yet to get the feeling that they're particularly overpowered. Other than buffing C'Thun, the lack of synergy in the cultists revealed so far seems to be an important downside.
Shifter Zerus is one of the more fun cards revealed in the set. It seems at first glance that it will not be very powerful. However, cards with such wide ranging random effects are difficult to theorycraft without testing, so it might be worth trying out in a deck that has cards sitting in hand for a long time, such as Handlock. @PlayHearthstone have confirmed it keeps changing while it is in your hand.Demented Frostcaller, Shifting Shade, and Twilight Flamecaller .Shadowcaster and Forlorn Stalker .Servant of Yogg-Saron and Faceless Summoner .Deathwing - Dragonlord and Embrace the Shadow .Thistle Tea and Twilight Summoner .Wisps of the Old Gods and Soggoth the Slitherer .Cho'Gall and Possessed Villager .