New concept art leaked yesterday. It seems obvious that the back of the helmet is inspired by Vader's, or it actually is a part of his (if it didn't completely burn on Endor) Don't know how I feel about it, looks like something out of Mortal Kombat to me. Seems legitimate though because of the prototype action figure sculpts that were also leaked yesterday. Also it looks like we can put the rumor that Chewbacca has a bionic arm to rest.

Not being a star wars fan, I legitimatly thought that was from mortal comat until I read the op