You may have read my recent (rather monolithic) post on Getting Started with OAuth.
Web Resource Authorisation Protocol (WRAP) is a set of so-called “profiles” for OAuth, which contribute a substantial number of additional features as well as vast simplification of the bloated (yet finally secure) authentication mechanism.
WRAP is currently in the very early stages of development as a protocol specification. But that doesn’t mean that it’s not gaining traction already, and beginning to make an impact.