Version 0.4 of XEP-0273 (Stanza Interception and Filtering Technology (SIFT)) has been released.
Abstract: This specification defines an XMPP protocol extension that enables a client to exercise control over the XML stanzas it will receive from the server by instructing the server to intercept and filter inbound stanzas. Changelog: Made it clear that presence means presence notifications; added support for subscription-related presence stanzas; described payload matching in greater detail; added use case for allowing only core XMPP child elements; increased protocol version number from 1 to 2. (psa) Diff: http://xmpp.org/extensions/diff/api/xep/0273/diff/0.3/vs/0.4 URL: http://xmpp.org/extensions/xep-0273.html
