Chewbacca might have a bionic arm in The Force Awakens according to this concept design

Some pictures of concept art have leaked for Star Wars 7 and it appears that Chewbacca has bionic arm. How cool is that?! Very. If this arm thing is true, I'd rather it happens onscreen than off - either way it would be continuing a grand tradition of people losing their arms!






Update - This idea was considered but thrown out. Chewie at one point was scripted as having ripped off Unkar Plutts arm.

Amusingly, it was C3PO that had a new arm in TFA!