User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-70.181.10.50-20130204212238/@comment-66.182.233.230-20130205012043

http://shop.capcom.com/store/capcomus/en_US/pd/ThemeID.1944700/productID.268583100/Monster-Hunter-3-Ultimate-3DS-XL-Case.html

And this is where you can preorder 3DS cases. (For the normal one and the XL.)