Android 4.4.2 Sony Z Ultra ported to the Xperia Z1

While waiting for the presence of Android 4.4 official KitKat of Sony Mobile, a developer at XDA, DooMLoRD, porting the ROM based on Android 4.4.2 KitKat available on the Sony Z Ultra Edition for Xperia Play Google Z1.
As quoted from xperiablog.net, DooMLoRD porting ROM Sony Z Ultra GPE after Sony released the kernel source code to support Xperia Z1.

Indeed, there are a number of features that are not working, like camera and Wi-Fi. However, if you want to taste KitKat in Xperia Z1, can download and follow the installation instructions in this link cyanogenmod.org. Keep in mind, to install the ROM, Xperia Z1 bootloader needs to be unlocked first.