Sharing outlook.com calendars in Outlook 2016

Outlook version
Outlook 2003
Email Account
IMAP
#1
Diane’s most useful article ‘Sharing Outlook.com Calendars’ – last revised in April – explained that outlook.com calendars can only be shared view-only with desktop Outlook 2016 because the latter cannot manage the calendar permissions required for a read-write share.

If this is still true, it seems a slightly bizarre lack of functionality in desktop Outlook. DAK if an upgrade for this is anywhere on the O365 roadmaps?
 
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