I think they would keep onboard storage for music, apps and such, but I think it would be a pretty interesting idea.
I hope they don't because of various accessories I have that require the connector, but it would be pretty cool.
I also think that they won't change the connector because they have such a large line that uses it is dumb. We would never have any progress if products including their connections were updated from time to time. And the connector is pretty big as it is now...