It finally has been released on DVD in the US (last year, so this is slightly old news, but I see no other thread for it on these forums). Discotek Media is the company doing this release. There are two versions. One has the original Japanese voice track, and English subtitles. The other is the English sub. The English dub is missing two episodes because those two were never dubbed originally (way back when it was first aired on US TV), and they didn't bother to dub them now for the DVD release. As such, you can't just switch language mode for these two episodes, and also a significant amount of other changes are made from what I've read, so putting it on DVD and allowing a language selection doesn't make sense.
Go here for the version that has Japanese voice and English subtitles, and a total of 54 episodes.
Go here for the version that has English voice, and a total of 52 episodes.