Google's latest security patch is being rolled out to Moto X Pure Edition users soon. The process should take a few days for it to fully roll out and as you know, it'll be rolled out in random batches of devices. This update will bring up your Android security patch level to February 1, 2016. Also, if you'd like, you can check out Google's latest overview of what has been patched for...
Source: http://www.gsmarena.com/moto_x_pure_edition_starts_receiving_february_security_patch-news-16913.php