Some Moto X owners weren't particularly happy to learn that a recent OTA with improvements to the camera also had the undesirable consequence of breaking root acquired through PwnMyMoto. Fortunately, the creator of PwnMyMoto, Justin Case, is back with an updated root method that works on the latest Moto X update and should be compatible with all recent Motorola firmwares.
Update: RockMyMoto is confirmed to also work on the latest firmwares for the Droid Maxx, Ultra, and Mini.
If you're eager to get started, swing by the RockMyMoto thread on XDA. The process is more manual than the previous one-click solution, but it looks more intimidating than it really is. You'll need to have Cydia Impactor installed, a working version of adb on your machine, and device drivers for your phone, if necessary. This process does require some command line usage on your computer, which may be foreign to some users, but it's not too tough if you go slowly and follow the instructions carefully. To alleviate some questions and confusion, jcase has also recorded a video to demonstrate the command line steps used while rooting his Moto X.
Since Motorola has applied Google's patches to close up the original "Master Key" bugs (1 & 2), Justin's new root tool relies on yet another, more recently discovered vulnerability. The new bug was found by Jay Freeman (a.k.a. saurik), probably best known for his work developing Cydia for use on jailbroken iOS devices. As described in Jay's blog post, this new member of the "Master Key" family is very similar to the second variant, but plays on a slightly different set of circumstances which somewhat limit its capabilities. Thanks to the source drop for Android 4.4 KitKat, we already know a patch is in place to fix the bug, which makes it perfectly suited for exploitation on Motorola phones until they are updated to KitKat or another security patch comes out to close this hole.
At least for now, Moto X owners don't have to choose between getting better photos or having root access. However, the odds are pretty good that future OTAs will break this root as well, especially if it's for the recently confirmed Android 4.4 update. If you have rooted your phone, be sure to do proper research before installing anything. In the meantime, enjoy the rooted goodness!