The Zorin Team has expressed that they have set a priority to looking into that feature, hopefully in time for Zorin 16. This currently is rumor, not set in stone. This is not a feature that would be exclusive to Zorin Ultimate, however, to the best of my knowledge.
I had tested the Upgrade Feature in another thread and I discovered that it has certain perils of its own...
I do not have any reason to believe that a Zorin Version of the feature could make a substantive difference to those downsides.