Sony had announced around the middle of March that it would be rolling out Android 4.4 KitKat for its selective Xperia Z models namely Z, ZL, ZR and Tablet Z in the middle of second quarter of 2014 meaning sometime in May 2014. Recent updates by Sony confirm that the company is going ahead with this schedule.
Sony has now updated its Xperia Z, Xperia ZL, Xperia ZR and Xperia Tablet Z product pages which state the Android 4.4 KitKat release date for these handsets as May 2014. However, no firm date for the roll out has been provided by the company.
Users of these Xperia models who are eagerly waiting for the KitKat updates can expect them to roll out sometime next month, probably around the end of the month. If it happens sooner, well and good. Since two weeks of April are already over, it is not far now.