A small firmware update for the Xperia Z1 and the Xperia Z Ultra has officially been treated by Sony on its official Twitter account. We will not jump to more expectations for the presuming the KitKat 4.4 roll-out. However, the updates are still quite good.
The new firmware will get you with a BT music streaming, display improvements, Wi-Fi improvements, e-mails and many more. The new update will bring out an additional entry in the display settings like the White Balance as seen on the Xperia Z1 Compact. This feature allows to adjust the perfect color channels for individual balance.
At the moment, the update is possible only through PC Companion and the Mac Bridge. Any news for the OTA update is still to be heard from Sony. Moreover, the possibilities of the KitKat update could still not be predicted.