If you want to follow the real down-and-dirty of what the identity layer will become, catch Jeff Hodges blog at identitymeme.org. Before he joined NeuStar two years ago (lured by Peter Davis among others), Jeff was with Oblix and Sun and is the editor of several Liberty Alliance specifications. He also co-chaired the OASIS Security Services TC (producers of SAML). He’s currently working with Eve Maler’s “SAMListas” looking hard at the intersection of SAML, OpenID, and XRI.