http://www.towerhobbies.com/listings/cat-cat-c.html
It says at the bottom pro and the cars have like a dif colored body or something. It also says on the page that it is 5 bucks cheaper than regular microsizers (weird, why would pro be added to the name of something cheaper than "regular"?)
Like the auto modelista set, these will debut in april
Towerhobbies says that the new body sets will be out in march.