http://makingstarwars.net/2016/01/25215/
This is awesome. I really hope they put the effort into nailing the asymmetrical helmet.
EDIT: just saw the previous comment. This seems like a good sign.
Also, this recent rash of celebrity deaths has me wondering who could step in to voice Vader should anything happen to JEJ (he is in his eighties, after all). Keith David, perhaps?