There is a clip from SGD up on gametrailers.com where it shows two assistant MGS4 producers talking about some things like the bonus DVD for limited edition and how 'auto aim' will by default be turned off for the north america release....
in the middle of the clip it shows alot of different bits of game footage while they are talking - in one segment I noticed snake walking thru a glacier trench in the snow....when he comes out into the opening, he is in the SE corner of the area out in front of the Tank Hangar building on Shadow Moses island.
Anyone else see this or know that Shadow Moses Island was in the game? It looks great - yet familiar in the MGS4 engine.