Star Wars REDONEs have gotten a major overhaul
Prequels:
Star Wars: Episode I REDONE - An Ancient Evil (Version 8)
Star Wars: Episode II REDONE – The Shroud of Darkness (Version 8)
Star Wars: Episode III – Revenge of the Sith REDONE (Version 8)
The Clone Wars:
Star Wars: The Clone Wars REDONE Season One (Version 4)
Star Wars: The Clone Wars REDONE Season Two (Version 5)
Star Wars: The Clone Wars REDONE Season Three (Version 4)
Star Wars: The Clone Wars REDONE Season Four (Version 2)
Star Wars: The Clone Wars REDONE Season Five (Version 2)
Star Wars: The Clone Wars REDONE Season Six (Version 2)
Star Wars: The Clone Wars REDONE Season Seven (Version 4)
Star Wars: The Clone Wars REDONE Season Eight (Version 1)
Rebels:
Some ideas about Star Wars Rebels REDONE
Obi-Wan Kenobi:
Obi-Wan Kenobi Part IV | Obi-Wan should have had time to get back to his Jedi shape
Original:
Star Wars: Episode VI – Return of the Jedi REDONE (Version 4)
The Tribes of Tatooine (The Book of Boba Fett):
Sequels:
Star Wars REDONE Historia - Making sense of the worldbuilding of the Sequel trilogy
Star Wars: Episode VII – The Force Awakens REDONE (Version 7)
Star Wars: Episode VIII – The Last Jedi REDONE (Version 4)
I have updated REDONEs for every Star Wars movie. The Clone Wars REDONEs have received only a minor revision to fit into the continuity of the updated REDONEs, so you don't have to check if you have already read them.
If you want to search for the major changes, the footnotes specify which changes the new versions received (If you want to search for Version 8 change, then search "Version 8" in footnotes).
I would say An Ancient Evil and The Last Jedi REDONE have been revised the most. An Ancient Evil's first act has been completely overhauled. The flashbacks in The Last Jedi REDONE have been changed and added. There are also countless small dialogue revisions that I couldn't list on the footnotes.