According to a Phonearena tipster, many of LG's devices will be going straight to Android 4.4, skipping right over Android 4.2 and Android 4.3 in most cases. Among the models cited by our source are the LG Optimus F3, LG Optimus F6, LG G Pad 8.3 (including Verizon model), LG G Pro Lite, LG Optimus F7, LG-D315 (unannounced), LG LS740 (rumored to be the successor to the LG Optimus F3), LG Optimus L9 II, LG Optimus Vu II, LG Vu III, and the LG G Flex curved.
LG has really been working hard, bringing all of these models to Android 4.4. The tipster made it clear that LG is not bothering with Android 4.3 for any of its devices. He also wanted to point out that the LG Optimus 4X HD will be sticking at Android 4.1.2. That is a model that is powered by the NVIDIA Tegra 3 processor.
LG G2 Android 4.4 KitKat upgrade later:LGNewsroomKorea
This is a rumor until LG makes this all official.