Yeah, unfortunately, they just planned to put out a fourth DVD that went up to episode 12, but it never saw release. Amazon even had listings for it, but it got canned. They (re:Al Khan) claimed competition between the uncut DVD’s sales and those of the edited dub’s DVDs was the reason, but now we know it was also an issue with the rights to Shunsuke Kazama’s Yugi/Atem voice recordings. An issue that may have been fixed recently, but we’ll see in time.
Meanwhile, if you’re willing to look past sometimes awkward voice-acting, Singapore did do a longer uncut dub haha. Last I saw, it was only up to Mai VS Marik in the Battle City Finals, but more could’ve been thrown out onto the internet. Unfortunately, looks like Dailymotion got rid of whatever episodes were left on there, so I dunno where you could watch it, unless someone wants to chip in? :P