Per a vote of the XMPP Council, advanced to Draft; also removed service discovery per Council discussion.
If an entity supports the Delayed Delivery protocol, it MUST report that by including a service discovery feature of "http://www.xmpp.org/extensions/xep-0203.html#ns" &NSNOTE; in response to a &xep0030; information request:
-This protocol was designed in a way that makes migration from XEP-0091 straightforward. All attributes present in the 'jabber:x:delay' namespace are present in the namespace defined herein. However, this document specifies a different format for the value of the <stamp> attribute (compliant with XEP-0082).
Implementations that support XEP-0091 should support the protocol defined herein as soon as possible, but should continue to support the protocol defined in XEP-0091 for backwards compatibility until the status of that specification is changed to Obsolete.