So, after testing notes.
What I did like:
-Finally, smooth scrolling in menus. It is a blessing.
-Seeing a lot of updated Sony media apps. I was afraid that we would be left behind with old versions.
-Extended standby mode(though it's not working right now :P)
-Throw option. I can use it alot, when I'll get home on summer holidays.
-Small apps.(but white background for small apps honestly sucks).
-Themes. Man, that's just magnificent. I always was annoyed how you choose the theme, and the system remains mixtured with different colors - like I want to use green theme, but some elements remain blue...Now if I set Green, it's FREAKING GREEN. Switches, menus, checkboxes, volume bar.
What I didn't like:
-Home screen still has LAGS. Maybe it's because it's early beta(alpha?), but something tells me it will lag in the final release, too.
Bugs I've noticed:
-Lack of network
-Extended Standby Mode sends phone to bootloop.