The Microsoft Commerce Server 2009 code name “R2” October Community Technology Preview (CTP) is now available on the Download Center. This is the fourth pre-release build of the next version of Commerce Server.
We invite you to install this pre-release of the next version of Commerce Server 2009 “R2” into a non-production environment to learn how Commerce Server 2009 “R2” provides an improved business management experience, enhanced cross-channel enablement with multi-tier development and deployment support, and a more streamlined deployment experience.

The October CTP release includes the following:

• Assembly and namespace changes
• Quick Installation Guide
• Name change for the Contemporary Site
• Product version numbering change

The Commerce Server 2009 code name “R2” readme file and the Installation and Configuration Guide, can also be found on the Download Center.
Note: Given the pre-release nature of this release, not all functionality is currently available. The release is for evaluation purposes only and is not intended to be used in a production environment.  The October CTP will not function after June 6, 2010.