I learned that next week's exec web chat on Windows CCS has been postponed until later in the month. But in the mean time, you can watch the Port 25 interview with Ryan Waite, group product manager for Windows CCS. Ryan discusses how open source influenced Windows CCS through the inclusion of open source in the product and contributions back to the community.
Expect to see much more high-performance computing content on Port 25. If you're interested in learning more about HPC, I would recommend bookmarking the Port 25 site. They'll be publishing blogs from a technical specialists for Windows CCS, and the Port 25 lab team will be reviewing open source HPC cluster stacks.