Some context: we just finished proving out OpenID Connect as a reasonable protocol for websites (seriously, there's good stuff hiding in there) and are now working on rewriting the prototypes so that they're stable and worthy of trusting. Expect an announcement in the next month, along with better documentation and on-ramps for contributors.
https://github.com/letsauth/letsauth.github.io
It's a successor to Mozilla Persona in development.
Details in the readme and on freenode #letsauth (mirrored to gitter.im/letsauth/letsauth).