I actually follow this guy on Youtube, so I trust him.
Also, I think it's safe to say the new Eeveelution will be Dragon in order to keep the balance.
I get what he's saying with the "Dark was created to nerf Psychic" thing, and I guess that "All Eeveelutions are pre-gen IV special based), but I still think there's just as much chance of it being something like Poison, Steel, or Fighting
True, but if you think about it, Poison and Steel would nerf Fairy and still follow the trend.
I've been watching this guy's videos for a few months now and I don't think he seems like the kind of guy who would do this sort of thing for laughs. He seems to genuinely believe the information from his "leaker." If he's wrong, then his leaker was pulling his leg and I'll watch his videos for entertainment purposes and not news (anyway, I get my news from Serebii instead). If he just made this up, then he's a pretty good actor because he had me convinced that he believed it himself. I don't trust him as much as Serebii, Pokejungle, and Pokebeach, but he's fun to watch.
I've heard of him before, and I watched some of his videos a couple months ago, and I know he's a decently-sized channel, so he's probably not just doing this to troll. Although, I imagine his "source" very well might have been.