Last week Motorola released the code necessary for developers to dive into the underpinnings of the Android 6.0 update for the Moto X Pure Edition. Now the company is pushing out those files for last year's flagship, the 2014 Moto X. These follow the Android 5.1 code that hit GitHub in July.
With these kernel source files, tinkerers can see the Marshmallow-related changes for the 2nd generation Moto X. Regular users won't get much use out of downloading any of this directly, but they may get the benefits if their custom ROM of choice eventually gets an Android 6.0 release that supports the Moto X.
So developers, have fun. The rest of us will watch with interest.