Sharing calendars in Outlook 2016

Outlook version
Outlook 2003
Email Account
Diane’s most useful article ‘Sharing Calendars’ – last revised in April – explained that 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?