Actually, there have been many explanations why it will not return. The primary one is that it is a system generated date/time based on when changes are made to the note. So everytime I add, remove, resave or whatever the update information changes. Even changing the updated date will trigger a change so I would expect that the date would actually never reflect the users intentions.
The best that could be offered would be an additional editable meta-data field which enabled a search, sort etc. There is no evidence that this is being considered but changing the updated field will not happen. The software has a different set of code that updates more frequently than the old Legacy.
You can change the created date so that can provide a means for sorting etc.