Mix of k810 and k850 and some imagination things + it's fake,
but i realy prefer that SE uses dpads(sorry if i make mistace in naming i'm not sure) instead of that joystick like w810! because after a while joystick have problems...
though after 3 months i haven't any problem but i don't use joystick very much i don't play games and for menus i used to use numbers instead of joystick... anyway i think it's better to replace that joystick with something else!
About buttons I'm very happy cause finally Keypad of SE phones has changed and new design is very beautiful (though it take some time to get used to it)
About camera if SE will use CARL ZEISS LENS + optical zoom + 5mp(or more) then i would go to sell my digital camera + k810 + k750 +...(other things) and buy this phone :D