Fortunately, Liberty Alliance and WS-* efforts and are starting to merge…
Here are the links:
– Web Single Sign-On Interoperability Profile defines an interoperability profile of the Web Single Sign-On Metadata Exchange Protocol that allows using either Liberty Identity Federation or WS-Federation-based Identity Providers to interact with a service.
– Web Single Sign-On Metadata Exchange Protocol defines how a service can query an identity provider for metadata that describes the identity-processing protocol suites supported by that provider.
– Microsoft PressPass announcement.
– Web Services Security Specifications Index page.
P.S. Did you know that Microsoft PressPass has also an RSS feed? Here.