Hmm, concerning Chewie's gray streaks... He is already 200 years old in the original trilogy, I wonder what the average life expectancy of a Wookiee is, and how old they are before they start turning gray? (Someone is totally going to try to answer that, aren't they?) Chewie has always struck me as still being a bit on the young and reckless side, leading me to assume that Wookiees typically live much longer than 200 years.

I guess I pretty much expect him to look like Chewie from the more recent Chewie promo costumes, this fan poster is the first thing to cause me to consider the possibility of him being an old Wookiee in the new film.