CyanogenMod has confirmed that CM11 nightly builds for the Xperia Z1, Xperia Z Ultra and Xperia Z Ultra Google Play edition (GPe) are now building. CM11 is based on Android 4.4.2 KitKat, so if you’re eager for a close-to-stock experience on your Xperia then you may want to check it out.
These have just come off the ‘test’ stage, so expect there to be a few bugs here and there. At the time of posting only the Xperia Z Ultra CM11 nightly build is available, it shouldn’t be too long before the Xperia Z1 and Xperia Z Ultra GPe appear on the CyanogenMod site. All credit goes to the fantastic FreeXperia team for making this possible.