So one of the big sticking points on the Motorola devices last year was the Bootloader. Unless you purchased a developer edition you were basically stuck.
Later a method came out from China where some devices could be unlocked with a fastboot code that would cost your $45 dollars via PayPal. That was hit or miss for a lot of people.
Now a new method has emerged that will also work on the new Moto x and possibly other unreleased devices like the droid turbo.
Check the link below for the details