Following in the grand tradition of XEP-0076 (implementation in the Psi client announced today), XEP-0132, XEP-0148, and XEP-0183, today we published XEP-0207: XMPP Eventing via Pubsub (XEP). This new “XEP XEP” is perhaps the most significant XMPP extension protocol yet published by the XMPP Standards Foundation, since it provides a solid, extensible foundation for any further payloads we might want to send over the network. Read the spec for complete details.