A new version of the WS-Metadata Exchange specification is released. SAP is an author of this specification. Please find the new version at our website Web Services Metadata Exchange (WS-MetadataExchange).
The major change in the WS-MetadataExchange specification is the utilization of WS-Transfer. The new version introduces metadata resources, where specific types of resources for metadata such as WS-Policy, WSDL, etc. adhere to the WS-Transfer protocol to enable retrieval of the specific type of metadata they support.
The optional bootstrapping mechanism in WS-MEX is retained, but it now allows obtaining the specific types of metadata from dedicated metadata resources that support the WS-Transfer/GET protocol.
As you may know, earlier this year WS-Transfer has been submitted as a note to W3C.