- Latest version of Sony Media Apps with seamless integrated services,
- my Xperia application that helps you find your phone and secure everything you have on it. Read more at myxperia.sonymobile.com,
- New Customizable navigation bar with quick settings,
- New widget functionalities, both on lockscreen and homescreen,
- Support for bigger (64GB) SD card so that you can store even more on your Xperia.
You can upgrade your Xperia ZL via Sony Update Service or PC Companion software. In that thread you can share with us your opinions about new firmware
Source: Xperia Blog