Short answer: no Longer answer: The point of the CAP Project is really to design Pokemon to test concepts for new niches in the OU metagame, whereas the pre-evos are just fun little side-projects with no real underlying concept beyond what makes sense from a flavour perspective. In this case, we had already designed them casually for fun, we're only just now trying to officialise them, purely for the fun of it (and I guess for sake of CAP ASB, but I don't know much about that). Will they ever be implemented on Pokemon Showdown? Probably not, unless there are huge calls for it or something; the only thing it would really accomplish though would be to annoy more people in random battles. Will we ever make a CAP specifically designed for Little Cup instead of OU? Hard to say, I mean it's a possibility if the PRC decided it would be worth while, and many people do seem to think it would be interesting, but Little Cup has comparatively a lot less support for it and fewer people know the metagame than would be ideal for a Project that is trying to maximise community participation; if you're interested I recommend reading the PRC threads on the subject.