Yeah, quite a lot of stuff changed between the development pics and the final product; go through them carefully and you'll find no end of small changes.
As for that 4th picture, I'm not really sure what exactly it's from. Schafer calls the image "SoundProof" and captions it "Man, why did we cut this awesome room?".
Where did you get your info? Are there interviews with Schafer where he talks about the cut stuff? Please direct me to them if there are!