Here are new images of the up-coming Black Series 6" Chewbacca and C-3PO set which is Amazon exclusive in the United States. You can pre-order the set here (affiliate link). The new images give us a better idea about what's new in this set.
C-3PO will have a dirtied-up paint application compared to previous releases and the figure will have four removable limbs. Hasbro will include four wire accessories which can be plugged into the sockets so it looks as if 3PO has cables coming out of the arms and legs. The 2-pack will also include a net for Chewbacca to carry 3PO in, along with an Imperial blaster and a removable bandolier.
This is a cool looking 2-pack which should be available before the year is over (you can order it here on Amazon affiliate link).