Wouldn't be surprised either way. Allegedly (can't verify at the mo') Stella has a sun on her neck and Luna has a moon on hers, so either they just changed the mark on their neck because of the name change or else they could be sisters, could be the same person (that "changes" between two characters), could be some kind of special person of some other kind, dunno. I hope they are both in but again, wouldn't be surprised if that won't end up being the case.