Since this is a CZ school thread...
Just so everyone is aware, the ad in the link above is for a CZ P07 "Duty". Discounting the picture in the ad on Bud's (their own disclaimer says may not be accurate) the ad description says Duty. The Duty model is like a version 1 of the P07. There now is a version 2 out, which will just be called the P07 with the Duty label dropped.
Here are the changes for the newest version:
Interchangeable backstraps
Updated trigger shape
New hammer
Front cocking serrations
Dehorned
The easiest way to tell the difference is the newer version has front cocking serrations on the slide.
Good catch, TopDog.