Motorola recently announced that would be updating it’s most recent devices, also the Moto X to the latest version of the Android 4.4 KitKat. Though they did not say anything about the update schedule and it is yet to be announced by the company.
But a leaked version of the Android 4.4 ROM for Moto X is already available for Download.This KitKat ROM was introduced on XDA, and seems like that it is a dump from the developer edition of the Moto X. Though the ROM has some bugs but still it is stable enough for everyday routine work.
You will be needing an unlocked bootloader in order to be able to install the new ROM onto your Moto X. The update also might make you lose root access to yor phone. So before installing the ROM carefully read the thread and instructions, from the Source link below.