On behalf of the Microsoft High Performance Computing team I am pleased to announce that the HPC Pack 2008 R2, Windows Server 2008 R2 HPC Edition, and Windows HPC Server 2008 R2 Suite have hit their 'RTM' (Release to Manufacturing) milestone!
This third version of our product have been in development for two years, and has many new features and enhancements. Check out the 'What's New' document on TechNet and the official product site's Windows HPC Server 2008 R2 Suite overview page for more information.
New to our v3 release is having several 'editions' of the HPC Pack.
All three of those, as well as the Windows Server 2008 R2 HPC Edition operating system, are available individually. We also have a 'Windows HPC Server 2008 R2 Suite' product purchaseable through VL and OEM channels that contains the 'Enterprise' HPC Pack and the 'HPC Edition' operating system together.
Please check out the two links mentioned before; other R2 documentation is available on that TechNet site, with more on the way.
Head over to our discussion forums if you have any questions, we'll be happy to help you out!