The Intel Woodcrest looks better than planned. It was expected to have a 80W TDP but now it turns out it's only 65W:
The new cores were pulled in to the third week of June because the latest stepping came in better than expected.
What I mean by better is almost bug free, runs faster than expected, and takes less power. The bug-free bit enabled a pull-in of the launch dates, if you don't need another stepping, you don't need another stepping. Faster is a little less obvious, I am told you basically need two steppings, side by side to see the difference and, even then, don't look for big numbers.