Who Will Be "Wicked" in the Next Oz?

          While watching the previews before The Dark Knight Rises, I noticed that Disney is releasing a prequel to The Wizard of Oz, the script of which predates the storyline of the popular Wicked on Broadway. The original Wizard painted the polarity of the two witches fairly clearly, where as Wicked portrayed the "good witch" as good-intentioned but complacent, and the "bad witch" as selfless and misunderstood, trying to rally against a greater villain: a power-crazed fascist Wizard of Oz. 

          So . . . what will Disney do with this script? If maintaining continuity with The Wizard of Oz and Wicked becomes difficult, which way will they lean? Toward the late author's seeming intent or toward the recent popular Broadway show?