If you have an AT&T Motorola Moto X first gen device and you were eager to get an update to Android 5.1, you should know that it is not going to happen soon.
The US carrier approved the OTA on July 7th, but they changed their minds yesterday and stopped the update from happening. This is supposed to be a temporary halt, and there are no available details regarding the reason for the suspension.
This update was supposed to be a huge jump from Android 4.4.4 to 5.1, but it appears that Moto X first gen owners from AT&T will have to wait a little longer. Motorola had enough time to figure out the kinks so maybe when it comes, this update will not sport many many bugs. Hang in there, folks, Motorola and AT&T will figure out what is wrong soon.