After releasing the Kitkat update for other variants of Moto X device, now Motorola rolls out Kitkat update for Sprint version of Moto X. Sprint USA network provider released Moto X in September 2013. Sprint Moto X Android 4.4.2 update is released with bug fixes and improved device performance. The following are list of enhancements officially released by Motorola:

Printing Documents and Pictures:  Added support for printing photos, Google Docs, Gmail messages, and other content via Wi-Fi, Bluetooth and hosted services like Google Cloud Print and HP ePrinters.

Improved Battery Life:  Fixed bugs which caused a small number of users to experience shorter battery life after upgrading to Android 4.4.

Fixed Email Sync Delays:  Fixed a bug that could cause email services like Microsoft Exchange to experience intermittent delays in data synchronization.

The device will automatically prompt Kitkat upgrade notification for the users. Once you get the upgrade notification Choose Download and Install option to upgrade your device. After installing the file your Moto X updated to 161.44.32.ghost_sprint.Sprint.en.US. The user can manually check for updates by Settings > About Phone > System Updates, then download and install the file to your device.