My Google-fu is failing to provide me with anything besides this website: http://makewithmoto.squarespace.com which talks about the 3D printer tour they were doing across the U.S. and how the cases were made in partner with Freshfiber: http://www.freshfiber.com who makes/sells really cool cases for a lot of phones but not the Moto X (as of right now, anyway.) I've just sent them an email to ask if they plan on making any cases and I'll post their reply here when I hear back from them.
Edit: Ummm sorry if my images are hilariously tiny. I am posting from my phone from the XDA app and they come across as miniscule. Here are links to the images just in case: http://i1.ytimg.com/vi/ud71ugfban0/maxresdefault.jpg, http://diyzilla.com/wp-content/uploa...phone-case.jpg, http://static.squarespace.com/static...3/MAX_8527.jpg