1.New and updated Sony Xperia UI similar with other Xperia devices running Android 4.3.
2.New Sony Smart camera apps and modes
3.Updated Sony media apps such as Album and Movies,and Walkman
4.Xperia Themes with additional support for downloads
5.New Xperia wallpapers and stock themes
6.Xperia Home launcher based on newer Sony Xperia devices
7.Project Butter wich makes UI very smooth.
8.New version of Battery STAMINA Mode for prolonging battery life
News from ("International Business Times").