The XMPP Extensions Editor has received a proposal for a new XEP. Title: Roster Versioning
Abstract: This specification proposes a modification to the XMPP roster management protocol to support versioning of rosters for more efficient downloading of the rost er information. URL: http://www.xmpp.org/extensions/inbox/roster-versioning.html The XMPP Council will decide at its next meeting whether to accept this proposal as an official XEP.