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John Game Freak here, bringing you even more leaks.
Starter Evolutions:
>Tepig becomes a Fire/Fighting (I know, not again) giant boar with flames around it's neck. It cannot learn Fire Punch
>Snivy loses its limbs and becomes a pure grass snake, learning a new poison move Coil, which raises attack, defense, and accuracy by one stage
>Oshawott evolves into a quadruped samurai with shell swords in holders on its front legs. It can learn megahorn
Other Pokemon:
>two Pokemon will only evolve when traded with each other. Shelmet (bug) will evolve into Accelgor, a pure bug type that looks like a ninja. Karrablast (bug) evolves into Escavalier, a bug/steel type with very high attack and defenses.
>there is an ice cream Pokemon line
>there is a Pokemon that changes appearance depending on the season
Other leaks:
>the champion cannot be battled until post game
>one of the gyms will have a different gym leader depending on what version you have
Feel free to ask for more