First system dump Android 4.3 beta test-build or engineering build has surfaced for Moto X phones. This build is not as much faster or more fluid from official 4.2.2 but there are some stuff for the camera improvements has been added, according to the firmware-leaker.
This is a system dump of the engineering build of Android 4.3 on the T-Mobile Moto X (updated 9/19/2013).
Those who might want to give it a shot, just head-over to the forum link source below, this firmware can be flashed directly to the Moto X devices with already unlocked bootloader via fastboot mode using the flash ‘boot.img’ and ‘system.img’ command. Anyway, this build can be rooted too.
Again, this is not an official released yet, so make sure you really understood how a leaked firmware will perform and may also harm your device if you don’t really knew what leaked firmware are all about. If you aren’t that much tech-savvy then you should wait for the official and final Android 4.3 firmware which is nearly coming soon.