Ripplin said:

Didn't realize it was a Rinzler book. That means top quality! Could even help ESB:R somehow if the final designs are in it.

Yep, I'll be scanning anything Ady wants or needs and sending it off to him when mine arrives in the mail

EDIT: some of the sample pages released online even show Vader's meditation chamber....and parts of the wall, but not the whole shape of the room, at least not on the page that I saw....it might be on another page that they haven't shown yet (not sure how far back this goes, but there was some discussion on the shape of that particular room)