You can finally unbrick your phone if you messed around with your rooted phone too much and something went wrong.

WARNING: This will take you to the leaked software build (build number 5.5.1_84) that's been floating around the Web for over a week. It's a solid build that's far better than the software the phone originally came with, and is an official moto signed build. However, since it's not the version that came with the phone, there may be no to accept the official OTA when it drops. But at least anyone who has bricked their phone for any reason can now unbrick it with very usable software.

Here's the link, I suggest getting the files while you can:

[RSD/Flashable] RSD v5.4.3 and Stock 5.5.184 fastboot partitions/flashable zip - xda-developers