Yep, archtop bodies changed shapes quite a bit. The mid/late 50's Hoboken guitars have a different shape than the NYC ones (actually the current Korean X175 is a good representation of 50's Hoboken guitars), guitars got bigger, deeper and different shape again somewhere around '61/62, and the cutaway became a little "pointier" and deeper in Westerly. And as far as I can tell, the archtops became progressively heavier (thicker tops and backs) and more rigid and "less acoustic" over the years too.