The Android 4.4.2 rollout for the international Samsung Galaxy S4 Active has just started its rollout, so you'd probably have to wait a little before you receive it on your device. Of course, you can manually check if it's already available by going to Settings > More > About device > Software update > Update. Users of the impatient type can also head to the source link in order to download and flash the firmware update themselves, but this is only advisable for those Android users that know the ropes.
Speaking about the Galaxy S4 Active and KitKat, we can't help but remember about AT&T's version of the device (SGH-i537). More than a month ago, the carrier began the rollout of Android 4.4.2 for the S4 Active, but it got halted shortly after. No specific reasons were specified, as AT&T only stated that it was working with Samsung on implementing some potential improvements into the firmware upgrade. Rumor had it that the update came with some serious bugs, so it had to be halted promptly. We can only hope that owners of the international Galaxy S4 Active won't have to experience such unpleasant ordeals and their chocolatey KitKat treatment won't be halted prematurely.
Samsung Galaxy S4 Active