Samsung Galaxy S4 Zoom (SM-C101) has begun receiving its share of Android 4.4.2 KitKat update in Russia. The Build number of the new update is C101XXUBNF4. It brings all of Android KitKat goodness alongwith faster performance, better battery-life as well as updated Samsung apps.
Samsung might have also included some camera features from the Galaxy K Zoom for its predecessor in the update. You can check for the update by going into Settings->About phone -> Software updates. Do tell us if you find something interesting in the update for your Galaxy S4 Zoom.