You can't unlock your bootloader unless you have a dev device or XT925..if you don't have either of these then you'll have to wait until there is a method to keep root (if it's possible).
Not entirely true. It you are on an XT926 non-dev device, you could still unlock the bootloader IF you haven't upgraded to any OTAs after version 9.16.6. If you've updated it via an OTA since that version, then no, you cannot unlock your bootloader. And downgrading back to 9.16.6 will not fix it. Once the OTA is applied, the exploit to unlock an XT926 is gone forever. It was the one and only chance of unlocking the phone. No other options exist unless Verizon allows it to be unlocked via the Motorola unlocker program, which I highly doubt will occur.
If you are still on 9.16.9 or earlier, then you can go here and try to unlock your bootloader ->
http://vulnfactory.org/blog/2013/04/08/motorola-bootloader-unlocking/
You
must be rooted in order to do this.
If you are on any of these versions, then you can no longer unlock your bootloader:
9.18.X
9.20.1
9.30.1
183.46.10 (KitKat)
Trying won't hurt anything. Worse comes to worse, you'll still have a locked bootloader. Best case scenario, you'll have an unlocked bootloader!
We've already had one success story since the OTA with a user who was able to unlock his bootloader, so you might be the same as long as you are on the version stated or earlier. He was and luckily, no later OTAs were applied, so he's now unlocked.