There is nothing kitkat about this update except for the white status bar icons...
Many other areas of the ui are still blue.
Some changes I noticed compared to 4.3 :
There is a noticeable speed improvement
The multitasking menu has been butchered. it looks terrible and some animations were removed.
Turning off the screen with power button: the display now fades out like nexus devices instead of instantly turning off.
New camera shortcut in lockscreen. and you can set default camera app for it. I recommend the new google camera app
New "Default applications" menu in the settings. Allows you to set default launcher and sms apps etc...
GPS toggle has been replaced with a "Location" toggle. Complete with a new location menu in the settings (a standard kitkat change). Samsung clock app has a new "Desk Clock" tab.
Calculator UI change. Now with square/rectangular buttons instead of circular.
Settings icon has been updated.
EDIT: also tweaked keyboard with emoji support
I advise everyone to wait for custom Note3/S5 themed roms instead of flashing this stock one....
LOL how many afraid of breaking knox warranty
My warranty is broken since long time (KNOX WARRANTY VOID 1), and I feel more free than before... I just don't care about preserving bootloaders and to be careful with root... I just flash what hell I want