http://blogs.msdn.com/b/rruggeri/archive/2008/02/01/microsoft-ihe-xds-b-reference-implementation-passes-the-connectathon.aspxIt is official, after a week of testing in Chicago at the IHE Connectathon , the Microsoft IHE XDS.b Reference Implementation has passed and received the GREEN LIGHT from the Connectathon staff: You can expect the final drop of the code to be posted toen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)