Episode 7 The Force Awakens See Threepio The first images have appeared of C-3PO in the behind the scenes, his left arm and hand is a dark browny/red rust colour in at least some of the movie.
Anthony Daniels has apparently been quoted as saying,
"I will tell you that the team then got together and built a new suit. They made an entirely new look-a-like with changes that you will never notice [on screen] that made my life a lot easier. I can get it on and off very quickly."
I think the chest has been widened , possibly lengthened and the back "box" looks further back, possibly the biceps look wider, shorts possibly changed on the front curves but I am pretty happy he is still "c3po"
Re: Episode 7 The Force Awakens See Threepio Either the torso was lengthened, or AD's posture is changing with age. The overall appearance of the suit is looking very ANH style. The belly wires are spot on ANH, and the torso is in nearly complete contact with the tops of the shorts, as was the case in ANH. I think there's going to be an influx of orders of arms over the next few months...
--- Live long, and Piobaireachd,
~Jordan, the Protocol Piper
Re: Episode 7 The Force Awakens See Threepio Well Anthony Daniels's body is older too and changed so I guess that's why. Beside also Anthony Daniels requests on the suit have been more and more demanding over the episodes I believe...