Critically, a new polymer with a higher glass content is being used, and the trigger guard is thicker (supported by the photos). Also, the P-08 has a longer grip and presumably higher-capacity magazines, although nothing is said about magazine interchangeability between the P-08 DUTY and 75-series pistols. P-07 magazines aren't, and CZ would benefit from letting people use the higher-capacity P-08 magazines with their P-07s--our bet is on this. The sights are purportedly metal now, and the gun has interchangeable backstraps.
There's some beveling at the muzzle of the slide and frame, a new style trigger, an accessory rail from here to forever, and even more cocking serrations. CZ is still going with the Omega trigger system, which allows the shooter to switch out the decocker for a manual safety. Availability'll likely be in both 9mm and .40 cal. And of course, lotsa different colors to pick from.