Someone wanted to see those .gif images of the starter evolutions.:
I've become more and more convinced that the released evolutions are fake over the course of today, and those .gifs have settled it in my mind. I wouldn't be surprised if a genuined Pokemon employee "leaked" fake images to stir up some hype in the days before release, because whenever the real starter evolutions are revealed, there's going to be a whole lot of interest...
As for the starters' final stats, I think we can tell a few things from the videos. In terms of HP at level 50, Tsutaja has the worst, Mijumaru the middle and Pokabu way out in front with the most HP.
In terms of Defence/Sp.Def, Mijumaru was in one video hit with an electric attack by Shimama, which was also at lv.50. Mijumaru didn't faint despite the super-effectiveness of the attack, suggesting that Mijumaru has high Defence or Special Defence (depending on whether Wild Bolt is Physical or Special - presumably Physical).
On top of this, we can make a few assumptions based on the Pokemon's appearances and possible typings. My guess is Tsutaja will end up as pure Grass and will be very fast with high Special Attack. I think Pokabu will end up as Fire/Ground or Fire/Dark with high HP and Physical Attack, as well as decent Defence/Special Defence and a decent Special Attack. I think he'll have low Speed though, possibly backed up by the fact that his attack, Nitro Charge, raises Speed. I think Mijumaru will end up as Water/Fighting, and he'll be an all-rounder, with his highest stat being Attack and his lowest being Special Defence.