The XMPP Extensions Editor has received a proposal for a new XEP. Title: MUC Fast Reconnect
Abstract: This document provides a protocol that can be used for limiting the amount of presence history needed when rejoining a MUC room. URL: http://xmpp.org/extensions/inbox/fastmuc.html The XMPP Council will decide in the next two weeks whether to accept this proposal as an official XEP.
