For those, who want to know noticeable changes.
Pros/Cons for updating to 4.4.3
* New Dialer Interface.
* Noticeable Camera Improvements.
* WiFi drop issue seems to be sorted out.
* LED Notifications not working for missed calls.
* Some users experiencing comparatively poor network strength.
* Data Drop still there (as reported by a user).
* "mm-qcamera-daemon" issue is still there and consuming battery.
Will update if i find any other.