Following on the one year anniversary of Commerce Server 2007’s release, Service Pack 1 is now available. This release contains all fixes to-date, Vista client optimizations for the business UIs, and more.

Find out more at:

• Download Informatoin: http://blogs.msdn.com/commerce/archive/2007/06/22/commerce-server-2007-sp1-is-now-available.aspx 
• Documentation Information: http://blogs.msdn.com/commerce/archive/2007/06/27/commerce-server-2007-sp1-content-is-live.aspx 

Hope this helps!