The slides from the WinHEC sessions are posted up at ms.com. We had 4 sessions that were Avalon specific:
Since most people who read this weren't there and couldn't ask questions, don't be afraid to ask questions here. I'll either answer them here or try to get an answer for you.
While reading these slides, keep in mind that we were targeting hardware people. This was really about letting IHVs know what they can do to prepare for what is coming in Longhorn and Avalon.