Some of Samsung's Galaxy devices are already getting Android 4.4.2, but today we found out exactly which ones in the US will get a taste of KitKat. The full list is a mouthful. The Galaxy S III, Galaxy S III mini, Galaxy S 4, Galaxy S 4 mini, Galaxy S 4 Active, Galaxy S 4 zoom, Galaxy Note II, Galaxy Note 3, Galaxy Mega, Galaxy Light, Galaxy Note 8.0, Galaxy Note 10.1, Galaxy Note 10.1 2014 Edition, and Galaxy Tab 3 are all on the waiting list.
Sadly, even though part of Google's goal with KitKat was to bring a refined Android experience to "the next billion people," slightly older hardware like the Galaxy S II are conspicuously absent from the list. Samsung says the updates have already started trickling out, though it didn't mention which device (or devices) were at the head of the line. How quickly you get the update depends on what you have and how quickly your carrier can get it certified. So, just take a deep breath and keep an eye on Samsung's MWC announcements in the meantime.

http://www.engadget.com/2014/02/18/samsung-kitkat-us/