This comes thanks to the efforts of XDA Recognized Developer Sahaab who has managed to get the new home launcher and accompanying widgets of the Xperia Z3 working on Xperia and non-Xperia devices running Android 4.2 and newer. The port will work with both rooted and non-rooted devices, and it can be installed by either pushing the app to your device’s system/app directory, or installed like a normal APK. Sahaab plans to backport this to Android 4.1, and if possible, Android 4.0.
One of the most noticeable changes introduced by the new home launcher is the persistent Google search bar at the top of the screen, much like Google’s stock launcher. App icons are also bigger, and some aspects of the interface have a much more ‘Material’ Design.