You?re talking about the Pok?mon movies right? I think they should definitely make widescreen available. It seems most children don?t like the bars at the top and bottom on 4:# televisions, so that?s why they do it. Personally almost all the video games I play can be set to 16:9, as are all the DVDs I won widescreen.
Miramax doesn?t seem to care about the franchise anyways, so I doubt they plan to release the sixth or seventh movie in widescreen either.