It certainly looks like the Android 4.4 KitKat will be on most versions of the Moto X very soon. AT&T just had a KitKat soak test start for their version of the Moto X. It's ironic that Verizon actually beat AT&T to the punch on getting a soak test going for the Android 4.4 update on their version of the Moto X. More than likely, this bodes well for a rapid launch of Android 4.4 KitKat for all versions of the Moto X.
What's even more ironic is that there are a ton of folks out there with Nexus 7 and Nexus 10 tablets who still haven't received their Android 4.4 KitKat updates. If they don't speed up the rollout, we could actually see a non-Nexus device get its official rollout of the newest version of Android before some Nexus devices!