Okay, by all means say that this is fake, by all means say that this is not what you have wanted, by all means say that this leak isn't canon until Game Freak has fully revealed the info to the big wide world.
All fine and good, I have put this picture together, but 'only' to show you what the possible evolution of the new starters to Sun and Moon could look like. The main source to the starter's final evolution, as seen in a link below, were from a leak for the anime of Sun and Moon, posted on 4chan, clearly marked with the 'Confidential' sticker, indicating that this is top secret to the company, and is not to be shown to the public until their reveal date. The person who has shown this also compared this to Noivern's picture with the same Confidential sticker and details, all in Japanese, and with no name, nor typing, which was leaked before the release of X and Y, when Black and White was still airing. This is nothing new, nor coincidental, as I have seen the leak to the real mid and final evolution of the Unova Region's starter, long before the release of Black and White, when Diamond and Pearl was still on air. These sheets, when I've seen them first hand, instantly made me recognize the Game Freak signature, right down to the smallest details, and sharp angle change to what many fans would obviously want of the new generation game. I love all the details and designs of all of them. I love how Rowlet's final evolution looks similar to Robin Hood, and has similarities to the prehistoric Cuban Giant Owl. I love how Litten's final evolution is what I have always imagine it of being as a ferocious Fire Tiger Pokemon based on the Chinese Zodiac and the Tiger martial arts, ever since Diamond and Pearl, and I especially love the unexpected surprise of Popplio's final evolution, going from a performing Sea Lion clown, into a beautiful mermaid to rival that of Milotic, with a weapon of choice based on the spiked club around it's waist and tail. The mid evolution for Rowlet appeared before the reveal of Rowlet, and at one time thought that would be it. But no sooner did Rowlet reveal itself, does it make sense with another showing of the picture, that it may as well be it's mid evolution.
You've noticed a while ago that I've written my thoughts of Ash's starter choice for Sun and Moon?
Well, it seems like I was partially wrong afterall, Ash WILL get a Rowlet, and a Litten, whilst the female trainer will get Popplio. Not only that, but it seems like this Pokemon series will be centered around Ash's Litten, based on the many scribbles and art of Ash with Pikachu, the female trainer, Rowlet and Popplio along with Litten's final evolution, located within only it's pose sketches. Yeah, funny, as in the sketch for Popplio and Rowlet, you see them showing off more poses and expressions in compare to Litten. But when this is shown, it seems like Ash's Litten will eventually evolve into yet another Charizard, lazy, disobedient, hot-headed, much to Ash's stress in the sketch.
Here's an idea for a typing, of which would make an excellent even advantage against each other.
Grass Starter Fire Starter Water Starter
Grass < Fire < Water Fighting > Steel > Fairy
That's just my conspiracy. Whatever name, whatever type, and whatever you want to believe is up to you.