Force manual customer approval without scope change

Is there a way to force manual customer approval of a new cloud app version without changing the scopes?

I have a major upgrade coming which significantly changes the functionality and want to give users the option to continue using the current version until they begin a new project.

Is there a way to do this without changing the scopes? The new version doesn’t require new scopes.

I suppose I could apply for ACCESS_EMAIL_ADDRESSES scopes which I may use down the track but this seems unnecessary.