Meh, I'd take this page with a boulder of salt. Anyone with IMDBpro can create pages and edit them, kind of like wikipedia. It seems like someone's wishful thinking really - I know Kristin Chenowith said in an interview she'd never do it (because by the time they made it she'd be old enough to be Morrible!
), so scratch her off, at least.
Also, as far as I know Stephen Schwarts has not, and has said he won't any time soon, released the music rights. Most of the original characters (Dorothy et. al) have their film rights owned by (IIRC) Turner Entertainment, the Baum estate owns the rights to the Wizard of Oz, etc. Trying to get all of these signatures would take a lot of time and a ton of cash ..
You can't even do Wicked as a school play yet, it's still so popular professionally. 9 times out of 10, a movie's made out of a Broadway musical to bolster falling ticket sales (Hairspray, anyone?) and Wicked is DEFINITELY still way above that point.
If it was to happen, though - I'd really much rather see the book made into a film then the musical. I love the play, but the book is PHENOMENAL and so much is left out of it in the stage show. It'd get real political and way inappropriate for kids thought, so it'll never happen.
