Sony anticipates upgrading the telephone to Android 4.4 some time one month from now. Alongside the previous leader, the Sony Xperia ZL, Sony Xperia ZR and Sony Xperia Tablet Z will all accept the chocolatey decency of the Kitkat upgrade in May. Those gadgets had accepted the Android 4.3 upgrade back in December.
For those in the states with the T-Mobile marked Sony Xperia Z, your last overhaul was to Android 4.2 back in the final quarter. As stated by T-Mobile's product help page, the transporter does suspect redesigning the gadget to Android 4.4 once it gets accessible. Obviously, the upgrade will need to pass T-Mobile's inward trying.
Lamentably, no exact date has for the overhaul has been advertised by the Japanese producer, however when Sony discharges a date, or begins pushing it out, we will tell you.