I absolutely love the animated series, and I'd venture to say that they're on their way to DVD in the US sometime in the next year or so.
If anything, I can see them finding a way to tie in the movie with the DVD's... so if not next year, than probably right near the movie's release date.
I just hope it's available sepperately, and they don't make an exclusive "ultimate Collectors series" of the full set. But then again, I don't have any volumes yet (40 bucks each? Eek!).