Microsoft Commerce Server 2009 Code Name "R2"

Microsoft Commerce Server 2009 code name "R2" - November 2009 CTP is a pre-release build of the next version of Commerce Server. Please note that this pre-release build is not feature complete.
Single-server deployments are supported, which consists of running all the Commerce Server 2009 "R2" components and software requirements (including Microsoft Windows and Microsoft SQL Server) on a single computer.
NOTE:
- You must UNINSTALL all previous Commerce Server versions. Leveraging a clean system that has never had a previous version of a Commerce Server installed upon it is strongly recommended.
- The Commerce Server 2009 "R2" product documentation will automatically be installed as part of setup and will replace the existing Commerce Server 2007 documentation set. Once installed, you can review the documentation by going to Start>All Programs>Microsoft Commerce Server 2009>Documentation>Commerce Server Documentation.
- CTPs are for evaluation purposes only and are intended only for short-term use in a test environment. This CTP will not function after March 2010.System requirementsIIS 7.0 with Microsoft Windows Server 2008
Microsoft SQL Server 2008 Standard or Enterprise (64-bit)
Microsoft SQL Server 2005 SP2 Standard and Enterprise (32-bit or 64-bit) or Microsoft SQL Server 2008 Standard and Enterprise (32-bit or 64-bit)
Microsoft .NET Framework 3.5 with SP1
Microsoft Windows SharePoint Services 3.0 (WSS) SP1 or Microsoft Office SharePoint Server 2007 (MOSS) SP1
Limitations in the unregistered versionThis CTP will not function after March 2010.