Mark Russinovich started some days ago a series of articles explaining the new features included in the Windows Vista Kernel on Microsoft's TechNet. The first one looks at changes in the CPU cycle counting, a new scheduler for multimedia applications (which, hopefully, will solve the current problems affecting music players and resource-demanding applications) and file-based symbolic links (a welcome addition), among other things.
The articles, as it's often happens with Mark Russinovich, are interesting, educational and entertaining, and everyone won't have no trouble understanding them. If Mark was not working for Microsoft, the most renowned colleges in the world would be fighting to dead for his services as a teacher
Inside Vista Kernel by Mark Russinovich