The official description from the Limited Time Magic site is as follows:
Discover enchanting secrets on an exclusive tour of the "Castles" at Magic Kingdom park! Set off on a grand adventure filled with fun facts from Disney Imagineers as you have the opportunity to explore Cinderella Castle Suite, scene-by-scene. From the foyer, to the parlor, to the bed chamber and beyond, see how Imagineers magically weaved modern Disney Resort amenities into a majestic fairytale experience. But that's not all! The tour continues as you wind your way through the New Fantasyland Forest, concluding at Be Our Guest Restaurant, inside the magnificent castle of the Beast! Don't miss your chance to see the magic through the eyes of an Imagineer! Space is extremely limited—register at the Disney Parks Blog today!