Version 1.1 of XEP-0178 (Best Practices for Use of SASL EXTERNAL with Certificates) has been released.
Abstract: This document specifies best practices for XMPP usage of the SASL EXTERNAL mechanism in the context of PKIX certificates. Changelog: Updated text and examples to be consistent with RFC 6120 and RFC 6125. (psa) Diff: http://xmpp.org/extensions/diff/api/xep/0178/diff/1.0/vs/1.1 URL: http://xmpp.org/extensions/xep-0178.html
