Almost all the smartphone manufacturing Giants have rolled out the Android Kitkat update for their hi-end devices except Sony, who has just recently decided to throw an android Kitkat 4.4 update for Xperia Z ultra, Xperia Z1 and Xperia Z1 Compact. The update has already started to be available for the above three mentioned devices but this may take some time for the update to pop up on the devices.
But this isn't enough yet. Sony is also working to roll out the updates for Xperia Z, Xperia ZL, Xperia ZR and Xperia tablet Z and it will shortly be available in May or June of this year.
More over, Sony will also roll out the updates for its Xperia T2 ultra, Xperia E1and Xperia M2 to be available really soon but the roll out time for the update is ambiguous.