The first ever Adult HD-DVD has just been released in Japan. Don't know if or when it will be available here in the United States, but it probably won't take too long. Here is a link:
http://gizmodo.com/gadgets/home-entertainment/first-ever-adult-hddvd-arrives-in-japan-194885.php
http://gizmodo.com/gadgets/home-entertainment/first-ever-adult-hddvd-arrives-in-japan-194885.php
