Yup, but we have other sources like the toys, etc. It's quite possible it may change once the movies come out. Thank back to the EP2/EP2 clones - those early suits are totally unusable today. Look at the early build FOTKs too that were made before the movie.
It's not 100% binary - I'm not saying we don't consider behind the scenes shots for details - because we do - what I'm saying is that the behind the scenes shots are used to fill in and support screen caps, not override them.