After consultation with the editors, I propose to cancel the upcoming “placeholder” MQTT TC call scheduled for 8/24 and review all CSD core ( material ) issues in subsequent calls. Thanks to Ken and Ian for responding on mqtt-comment and opening tracking issues. If you want to start reviewing and/or commenting on New/Open/Deferred issues: Key Summary Components MQTT-464 Add reason code 150 to PUBACK packet core MQTT-466 Add reason code 150 to PUBREC packet core MQTT-489 The term Non-Shared should be spelled Non-shared edits MQTT-491 Wording of 3.3.1.3 RETAIN edits MQTT-492 Validating the payload format core MQTT-493 Minor errors found in wd15 edits MQTT-494 Unsubscribe actions does not define shared sub actions core MQTT-495 Reason String property on AUTH missing in 3.15.2.2 edits MQTT-498 No way to set properties on will message. Property behaviour on retained messages unspecified core MQTT-499 Changes made by TC Admin in CSD01 edits MQTT-500 Incorrect maximum value for Maximum Packet Size edits MQTT-501 Change type of Maximum Packet Size to Variable Byte Integer core MQTT-502 Handling version 3.x clients core MQTT-503 Properties are required for SUBACK and UNSUBACK edits Process refresher: If any changes that are Material are made to the draft after the public review then the TC must conduct another public review. The draft may not be considered for approval by the TC as a Committee Specification until it has undergone a review cycle during which it has received no comments that result in any changes that are Material. * " Material Change " is any change to the content of a Work Production that that would require a compliant application or implementation to be modified or rewritten in order to remain compliant or which adds new features or otherwise expands the scope of the work product. The TC may conduct any number of public reviews. The initial public review of a draft must take place for a minimum of 30 days, and any subsequent reviews must be held for a minimum of 15 days . Changes made to a committee draft after a review must be clearly identified in any subsequent review, and the subsequent review shall be limited in scope to changes made in the previous review. Before starting another review cycle the revisions must be re-approved as a Committee Specification Draft and then approved to go to public review by the TC.