Still do not know their names, although we know that the evolutions of Tsutarja will just kind of plant, those of Pokabu are Fire / Fighting and those of Mijumaru only water. We assure you that these Pokemon are real.
Is what it said on pokexperto, according to google chrome's translator. I don't really mind how they look, and I remember not liking how the first forms looked either at first, but they grew on me, so I figure that these should be the same (though I still don't like Pokabu, its final form is the only one that I don't like already anyways). If they do wind up those types (Grass, Fire/Fighting, and Water) I'd be pretty disappointing, since that would be the third time each type combo was used for a starter.
Like I said though, if they do get solid type combos, I would probably be fine going with either Tsutaaja or Mijumaru, with those evos. The problem is, I'm not really sure I see that happening if those are the evos, Pokabu could be fire/dark, but it also seems to have a wrestling theme, so Fire/Fighting could be just as likely. Mijumaru I think would be Water/Rock rather than pure water, but thats not exactly great (could be alright if it got claw sharpen and good speed and attack, claw sharpen/stone edge/aqua tail, only resisted by Empoleon, Breloom, Poliwrath, and Dialga I think), and I'm not sure what Tsutaaja could be, dragon maybe, but maybe not for a starter, like has been mentioned.
EDIT: Also, as far as Dento's gym, if it is a triple battle, then that means there's a chance that each monkey learns a different TM, and you get the TM that corresponds to your starter's type. That also means that you would need to catch at least two pokemon, along with the starter, to get past the first gym.
And for those complaining about people doubting serebii, they do make sure to mention that there
is a chance that they're fake.