The update that was slated to arrive at the end of January, is now pushing to the Korean LG G2. While only a few days late, the OTA comes with the new Android RunTime (ART) onboard. The experimental runtime that will eventually replace Dalvik is said to be better for both battery and performance.
Basically, when you use Dalvik, the bytecode for an app is created after you open said app. With ART, this happens right after you install the app, making apps ready to go before you even open them the first go around. People who use the new runtime have reported an increase in storage use (10-20 percent) but mileage may vary. But I digress.
Korean LG G2 owners should be on the look out for the OTA and this new option. There is still nothing on when US users are to see Android 4.4 on their handsets, but currently it’s slated for the end of the quarter. So those of you who own the phone in the US will have to wait patiently for another month and a half at the latest.
source: Phone Arena