I have search many sites but i dont see our device will update to kitkat. Any idea?
It is possible the v500 will get KitKat but since google only just released it it is unlikely the stock LG Rom will be up-gradable to kitkat for at least a while. If you want kitkat I suggest you buy a Google play edition (v510) or if you already have the v500 put a custom AOSP Rom on it such as the Cyanogenmod.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?