Currently, the only way to get the logic Apple loops utility is to login to an Apple developer account and download the package.
I am making the Apple loops utility download available on my website here. http://logicproxnet.wpengine.com/download-apple-loops-utility/
This video also shows you how to send any piece of audio from your main track area to the Apple Loops Utility for editing.
Logic Pro X Apple Loops Utility
Apple Loops Utility here http://logicproxnet.wpengine.com/download-apple-loops-utility/