Heart of the Wild: Stamina bonus changed to 2/4/6/8/10%.The important thing to note is that it's from 4/8/12/16/20% on live. So it's about a straight 10% nerf.
What does this mean? Does it change gemming strategies or gearing strategies? Eh, not really. Not for most things. Druids still have a very substantial stamina edge over other tanks if they want it.
For normal tanking, we'll still be looking at around 40-42k in BiS gear even after this, depending on what you're gearing for. That's still very high. I'll do more analysis of this later. My suspicion is that DKs will have more armor, better cooldowns, much more avoidance and a bit more stamina than a druid using similar strategies, which should be more alarming. But I don't want to say that definitively until I've actually talked with some DKs and seen how they gear.
For Sarth3D - that really hurts the notion of a druid safely tanking without external cooldowns, at least unless they have jewelcrafting and leatherworking. Well, almost. If you can get to 47k and 345 FR, you should be able to survive with one barkskin and one survival instincts. But the nightmare seed + fire resist pot is out unless you're a JC and a LW.
For antitank: in order to keep the same level of health, you'll need to have something like essence of gossamer equipped. Really, that's about it. You lose about 2-3% DPS from that, and that sucks, but it's not so horrible that you'll be seriously disadvantaged. You'll still be able to tank well and DPS decently in the same gear.