New York Toy Fair 2012: 6869, what's the secret?

They hide things from us ... why the box of the set 6869 Quinjet Aerial Battle is it in white version with a big logo Confidential ??? No doubt because it contains one or two minifigs which Marvel does not wish to reveal, otherwise they will reveal all of the protagonists of one of the film's most important scenes.

I give you the description of the set which confirms this theory:

Loki is up to no good and is planning to destroy the earth! As he flies into battle on board his chariot, help the Avenger's defeat their nemesis using the supersonic Quinjet! Fire the missiles, release the mini-jet and imprison Loki in the prison pod! With the high-tech Quinjet, the Avengers can't fail! Includes Thor, Iron Man, Black Widow, Loki and more minifigures.