A firmware test on Android 4.4.2 official for Galaxy S4 (Samsung GT-I9505) smartphone model was leaked online today and can be installed manually by Odin software on this model.
Samsung may release the first Android 4.4.2 update for Galaxy S4 owners. The new build is I9505XXUFNA1 and brings a great number of improvements to the phone. On the graphic side, the only major change is changing the appearance of upside notifications, that on the new firmware with Android 4.4 the icons are white, instead of those green ones.
Firmware has already been tested for a week and seems to be stable enough. If you’re good at installing ROMs via Odin and you are willing to lose your phone warranty you can test KitKat on S4.
Download from this link: I9505XXUFNA1