Sony has announced in a blog post that they will be rolling out Android
4.4 KitKat update, and other minor updates now users will be getting revamped Status Bar and Quick Settings. The update will also bring some changes to Sony's built-in apps in terms of Messaging, camera battery and also fixing sound bug issue for its Xperia Z, Xperia ZL, Xperia ZR and Xperia
Tablet Z.
Messaging: a few User Interface adjustments including slicker "send" animation and now you will be finding smileys when ever there's an app with keyboard.
Email: Loading newer mails is now easy and more responsive viewing pane. Split screen modes for easy digest for Xperia Tablet Z.
Camera: A selection of Xperia Camera apps directly accessible from viewfinder. including personal favorite "Creative Effect", and more for download to boot.
Battery Stamina Mode: Unique power management feature, bringing smarter data management and prolonging battery life.
Media: Walkman, Album and Movies with Sony Entertainment Network, cloud service integration - a more converged and full sony entertainment experiance, more intutive UI, better download speeds. Xperia devices will get firmware 14.3.A.0.757 update that will fix the
sound bug issue that sometimes caused notifications and calls to be
played through the internal speaker instead of the external one, which
made calls difficult to hear.