draft-ietf-extra-imap-inprogress-04 defines a new IMAP untagged response code,"INPROGRESS", that provides structured numeric progress status indication for long-running commands.It looks like an useful addition for running and debugging IMAP and IT personnel in environments using IMAP should be aware of it. I see no issues from an operational or manageability point of view and I consider this document READY.