Interesting to see Windows Server 2008 has RTM'd. I've got a dual opteron machine I've built a few years ago and I'm itching to set up Longhorn on it. I'm particularly interested in the virtualization features and seeing how well they work on a MS x86-64 opteron platform.
Update: Excellent! The Hyper-V versions of Windows Server 2008 DataCentre, Enterprise and Standard are already released as a single DVD on MSDN. I'm downloading already J