I think aintitcool might be jumping the gun here. The design of the action figure is taken from this drawing by Mark Brooks:
Which is a few years old now. It's his idea of what Silver Samurai could look like in the Ultimate Marvel universe. The weird thing is I don't think Silver Samurai has appeared like this in any published comic and it's basically just fan art done by a professional comic artist, I wonder if he knows that Hasbro are using his design?
The shoulder armour and helmet crest thing don't match up between the picture of Silver Samurai from the film set and the action figure either, so I'm guessing it doesn't represent what Silver Samurai will look like in the film.