I seriously doubt GL put anymore work into these films outside of what we last saw revised in 2004.
My guess is the most we'll see officially from LFL is the long overdue Saga blurays with a new CG Yoda for TPM (another change way overdue) and maybe a few fixes here and there. But nothing on the scale of what AdY is doing. And nothing close to the same level of love and care that the films deserve. Sadly we probably wont even see a restored OT.
Sorta back on topic....
All these pics of Coruscant has me wondering about possibly seeing Luke @ the very end of RoTJ in the Jedi Temple and then pulling away slowly. No idea how to pull something like this off though. Maybe just something simple like him looking out a window or something from within the temple. I'm thinking of something along the lines of paralleling Anakin quietly gazing outward in RoTS just before he made the decision to turn.
I guess re-using some footage from somewhere else in the movie is the only way possible.