From the stand point of body thickness, binding and angles, I haven't seen any real change until the CC. The CC headstock size and neck angle are different from the standard. I also remember there being a difference with the body carve between the standard and CC line.
I haven't played a newer standard in a year, so I'm going on memory here, but the standard 150 felt similar to my 2003 157, except the neck was a touch beefier, more like my 535.