Sony is set to bring Android 4.4 (KitKat) to consumers this coming May, according to the Sony website. Those who own older Xperia Z products will be updated to the later version of the operating system. This covers the Xperia Z, ZL, ZR and the Xperia Tablet Z. We previously looked at the company's plans to bring Android 4.3 and 4.4 to its portfolio of Android hardware, which revealed a mid-Q2 launch for KitKat on older Xperia Z-series devices.
Unfortunately, no firm date within the next month has been provided and we'll just have to wait until May hits before we can begin searching for these promised upgrades. We'll let you all know when 4.4 hits older Xperia Z hardware as soon as we know ourselves. Not long to go now, folks.
Source: Xperia Blog