Sony has officially announced that the Android 4.4.4 KitKat OTA Update is currently being rolled out all over the world for the Sony Xperia Z2 smartphones. The update is also being pushed out for the Xperia Z2 Tablet, too.
With Android 4.4.4 KitKat update for Xperia Z2 has the firmware build set to 23.0.1.A.0.167. It comes with tons of improvements and new features that should offer you one of the best Android experiences up until the launch of Android 5.0 Lollipop for Xperia Z2 in 2015.
This new KitKat 4.4.4 will add the following major feature for your Xperia Z2 device: PS4 Remote Play, new Smart Social Camera applications, Hi-Resolution audio, Ultra Stamina Mode, Quick Settings receiving brand new toggles like Smart Screen rotation, smartwatch remote Bluetooth Unlock and Record Screen. There are tons of other great features and improvements that you will find in this update, so you should make sure to keep an eye on your Xperia Z2 device's Notifications panel in order to install the new Android 4.4.4 update build minutes after the firmware is pushed your way.
It has been confirmed that the update has already been spotted in Latin America, South-East Asia and in several countries across the Middle East. All the other Sony Xperia Z2 users that are based in other regions should be getting the files starting tomorrow. Note that the Android 4.4.4 KitKat build 23.0.1.A.0.167 is being released for Xperia Z2 in phases, so you shouldn't panic in case this new firmware isn't sent your way today.
Sony will most probably complete the Android 4.4.4 roll out before the end of November, so that they can then start implementing and testing the Android 5.0 KitKat firmware before the full roll out that should take place some time in Q1 2015. You can check yourself for new updates by going to Settings> About Phone> Software Updates and then check for new firmware files under System Updates.
If you are notified that the Android 4.4.4 KitKat is now live for your Xperia Z2 device, then you should simply confirm the download process, after that your smartphone will take care of the rest of the process. Tell us in comments if you've found any other major change that isn't listed by Sony in their KitKat update changelog.