The Opalis grant is available to existing System Center Server Management Suite Enterprise (SMSE) and Server Management Suite Datacenter (SMSD) customers with active Software Assurance. The grant will include use rights for the Opalis Integration Server, Integration Packs, and Process Catalogue software and the right to manage server devices licensed for SMSE or SMSD. For existing servers licensed for SMSE or SMSD these grants will be made at no additional license cost. 

http://connect.microsoft.com/site1015