I don't know much about
Sandybell's copyright situation, but it at least looks slightly more hopeful than
Candy Candy getting a release. -That's simply by virtue of Sandybell actually
having a page on Toei's animation database. Candy
doesn't have one. If you click the link for キャンディ・キャンディ or it's movie -it isn't actually a link to a page. Toei only has a tenuous grasp on Candy's copyright, so can't display any of its images.
It doesn't look like Sandybell has a DVD release in Japan, either... I only see a DVD compilation of various openings from Toei's catalog released in '02, and some sets of dubious origins that look rather like bootlegs to me which are available internationally. I'm not aware of it having a legal dispute, so it looks possible it might get a release if Toei feels like doing the work of remastering or cleaning up their prints.
An official set with English subtitles is pretty doubtful... Older anime rarely gets picked up unless it's a cult classic with a strong fanbase like Gundam or had involvement from Tezuka. Right Stuf/Nozomi or Discotek would be the most likely to try and bring it over since they target older series and movies. They've brought over the original
Cutey Honey,
Rose of Versailles,
Puss in Boots, and other older classics, so they'd be the ones to hope for. Though until Japan gets a release, it's pretty doubtful any company will pick it up for subtitling since the English version DVDs are usually based on the Japanese ones.
Though you never know when your wish will magically be granted, because I'm finally getting my
Princess Knight release this year -and I never thought it would happen. So, remain hopeful.... but don't get those hopes too high.