There are quite a few new and nifty, albeit small, features with the newest version of Android. What many of us are interested in though is how well the hardware will perform with the new OS. With KitKat, the distinction is improved performance even for low end hardware.
That should mean solid improvements for the flagship devices right? According to LG, the upgrade to Android 4.4.2 on the G2 provides a 17% increase in performance when applications are commanded to run. Battery performance is expected to improve and everything else simply gets faster (albeit, some will not be noticeable to the naked eye).
The upgrade will provide faster web browsing, more efficient playing of media and will even include Google Cloud Printer for wireless printing, whether via Bluetooth or Wi-Fi. LG did some internal testing and provided some details on just how much faster you can expect your G2 to get once it receives the Android 4.4.2 KitKat update.
source: LG UK (YouTube)