Yes, the newest CTP of the next release of Team System has been made available. From Jeff Beehler:
I’m happy to announce that the next Community Technology Preview of Rosario (officially known as Microsoft® Visual Studio® Team System code name “Rosario” November 2007 CTP) is now available. Customers can immediately begin downloading the VPC images from our download page.
Once you run the VPC you will find a set of mini-stories, or walk-throughs that will guide you through the features in this CTP release. I will be making screencasts of these walk-throughs shortly.