This is probably underused in user interface: the new version can include new features but give the user the choice of when to add the new feature as a new cont

This is probably underused in user interface: the new version can include new features but give the user the choice of when to add the new feature as a new control on their screen or when to replace an old behavior with a new behavior. That would be a useful feature in itself. By contrast usually, the publisher acts like they know better - all the way to auto-updating (with a new user interface, sure, why not) at the exact wrong moment. For example, you launch Zoom to join a meeting that started 3 minutes ago and what do you get: minutes of auto-update which you can't even override.