The IESG has approved the following document: - 'New Properties for iCalendar' (draft-ietf-calext-extensions-05.txt) as Proposed Standard This document is the product of the Calendaring Extensions Working Group. The IESG contact persons are Alexey Melnikov, Ben Campbell and Alissa Cooper. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-calext-extensions/ Technical Summary: This document registers various extensions to the calendaring format defined in RFC5545. The extensions have been used by various vendors in an ad-hoc fashion and are now to be standardized using the registry provisions in RFC5545. Working Group Summary: There were no major disagreements on the introduction of these new extensions. For some of the extensions such as IMAGE and COLOR, there was discussion on if the properties fit in well with the iCalendar data model given they are presentation related properties, but keeping them did not lead to objections in the end. Also, the introduction of other extensions such as REFRESH-INTERVAL prompted discussion on if its use promotes good practice, but it was concluded that the properties aptly describe current practice and that advanced mechanisms such as push notifications should be defined in other documents. Document Quality: The extensions defined have been in use by multiple major calendaring vendors, or an intent to make use of the standardized extensions has been expressed. In addition, the document has been reviewed by the experts of the Calendaring and Scheduling Consortium prior to publication as an IETF draft. Consensus has been reached among calendaring experts that the document has no substantive issues. Personnel: The Document Shepherd is Philipp Kewisch <mozilla@kewis.ch, the Responsible Area Director is Alexey Melnikov.