This was an article on the Wikia (though I don't believe it's actually lost media):
You asked for it. You got it. I hope I don't get in trouble for this.
This is all I have been able to find. My sister insists that she has a DVD of the animatic somewhere but she hasn't been able to find it yet. Looking back, I wish I could fix every single one of these drawings, but I still think this would have been bad ass. When they get to Agrabah, I boarded it so I could use original backgrounds from Aladdin that I was able to get copies of from the Disney Archive. So...when Riku grabs the lamp and suddenly becomes possessed by Maleficent, it's the same background as when Aladdin first grabs the lamp in the movie.
Woulda/coulda/shoulda been cool. Maybe they'll do it at some point but just to head off some of the frequently asked questions, I have no control of this project. It's completely owned by Disney. I just directed and boarded the animatic pilot.