Microsoft have released Windows 8 session videos from the BUILD conference that you guys and girls have to check out.
These videos give you great insight into what Microsoft is thinking and where Windows 8 is going.
This video is Introduction to the Boot Performance Assessment.
In this video, you will learn about how the Assessment and Deployment Kit has made it easier to measure boot performance reliably and to identify areas where performance can be improved in Windows 8.
You will learn about the boot assessment and what it measures, the types of issues it highlights, and how to use it to test and fix any boot issues you find.