In a recent interview with Total Film’s digital magazine, Sam Raimi clarified that the upcoming Oz, The Great and Wonderful is not a sequel or even a remake of The Wizard of Oz, but more of an indirect prequel:
““I think The Wizard Of Oz is such a great film and I would never attempt to [remake that],” he explained. “You could call [Oz] a prequel, that would be accurate – but I didn’t have to re-invent any of that fantastic history.”
“Mitchell [Kapner, screenwriter] took about 40 per cent of the events that were sprinkled here and there about Oz from Baum’s books and really created the other 60 per cent himself out of his imagination, because there just wasn’t enough there,” Raimi added.
“I gave him notes, I brought aboard a second writer to help fill out some other areas of the story, my brother did a little work on the script, and all the actors contributed. It really was a very big collaboration.”