Our Friends over at From 4-LOM to Zuckuss have alerted me to a variation on the Solo 3.75-Inch Chewbacca figure that they just found. It has to do with the back of Chewbacca's Bandolier and large pouch over his right hip. Hasbro has actually added more details to these areas instead of leaving them smooth and lacking details.
• 1st version. Back of Bandolier is smooth.
• 2nd version. Canisters and holders added to back of Bandolier.
Its pretty easy to see which version you have, just get a flashlight and look through the sides of the bubble to see which version you have. Above is a side by side comparison that shows the changes. To view much larger photos visit the figure's page.