Some more deets on the SOMA trailer
http://frictionalgames.blogspot.co.uk/2013/10/soma-officially-revealed.html
"Making The Trailer
While the footage above is unedited gameplay footage (I played through and recorded it myself), it is not from an actual game level. Just like with our Amnesia teaser video, it is a custom made map that is meant to show off the general feel and tone of the game over a four minute long trailer. This means that it is not an exact representation of how the game is actually played. It gives a pretty good idea of how the gameplay works though."
@TheVoxelman on twitter