I had the chance to ask Daneil about different use-cases for this federation stuff and how it fits together (or doesn’t) with OpenID, OAuth, and other Identity 2.0 stuff. From the demo I saw ahead of time, it looks like they’ve thrown together a quick and easy way to wire up SAML-based trust between two end-points.
Disclaimer: Sun is a client and is paying for my participating in Identity Buzz.