I think Coppola is going to re-do The Godfather, Part I. He will film new scenes with Robert DeNiro, now in his late 50's, as he will match the age of Marlon Brando, who played Vito Corleone in the movie. This way you can see young DeNiro, as a flashback in Godfather Part II, and then for continuity reasons you can see an older DeNiro in Godfather Part I.

I think this would work just as well as re-editing Anakin in ROTJ for continuity sake

Then you can have every Godfather fan up in arms just like every Star Wars fan for the changes in their movies.

And Lucas and Coppola can say this is our vision, and now The Godfather and the Classic OT are finally finished!

Hopefull Lucas doesn't give his buddy Coppola any ideas!