As much as I would like to believe at least one of those is a Trails game, it's likely not the case.
My guess is that Marvelous is pushing more of its library to PC. They're probably doing a package deal with whatever their third party house is porting. Since XSEED doesn't develop PC games (they only tweak PC ports that already exist with a sole heroic programmer) they're not in the business of porting, so... it's either existing PC titles, or ports from their parent company Marvelous. Those are fairly heavily limiting factors.
My guess is that Marvelous is pushing more of its library to PC. They're probably doing a package deal with whatever their third party house is porting. Since XSEED doesn't develop PC games (they only tweak PC ports that already exist with a sole heroic programmer) they're not in the business of porting, so... it's either existing PC titles, or ports from their parent company Marvelous. Those are fairly heavily limiting factors.