Tom Gillespie writes:
[...]
>> :package-version instead of :version?
>
> I think because org is part of emacs core we use the emacs version?
Please use :package-version and let the mapping be handled by
customize-package-emacs-version-alist.
> I see "24.1" included with other org defcustoms.
There has a been a good amount of clean up to remove :version and use
:package-version, but, yes, there are still :version instances. Things
look good for the last Org release, though:
$ git grep '29\.1'
lisp/org.el: ("9.6" . "29.1")))