I played 3 matches and I don't know what it is but it seems exactly the same. In all three games I was rushed quickly and that is all they really did. I cleared out the first wave, then the second, then counter pushed and won. I will admit that I lost a 4th match really fast. A ZvZ. That is only because I tried to go for an economy build and got fast rushed by zerglings. Every game consisted of getting rushed quickly. Nothing else seems to be very different though I did see an orbital command up and toss warped in some cannons for D.