Firstly, both prints ARE in fact in 2.35:1. They both look great, the colors are rich and the pictures are sharp, the sound mix sounds great. However, the production painting prologue IS matted (but not in 1.85:1, matted in 2.25:1). Also the "blue within blue eyes" have not been added in the added scenes. I haven't actually watched either film yet so I can't get more detailed then that for now.
I have seen 2 of the featurettes, very cool and in depth, intervies while showing cool production drawing and effects tests and production outtakes. Haven't seen the deleted scenes yet.