A major Pokemon X and Y Pokedex leak has been unveiled by an anonymous Pokemon leaker, and it illuminates many aspects of the upcoming 3DS release, including the starters evolutions.

Regarding the Pokemon X and Y Pokedex, the leaker on Pokejungle states the following regarding the starters evolutions.

--Chespin will evolve into Shinnut at level 18 and Chinken at level 36, which is a Grass/Dark dual-type. This evolution gains more armor and lengthy spikes, and is high on defense like Blastoise.

--Fennekin will evolve into Kinduples at 18 and Feuensis at 36, a Fire/Psychic powerhouse that has a necklace made up of will-o'-wisps.

--Froakie will evolve into Ribburai at 18 and Crokssin at 36, a Water/Fighting dual-type that becomes fast like a ninja.

--In addition to these starters evolutions, the Pokedex leak also confirms that already introduced Fletchling and Talonflame will had another evolution called Scorchawk at level 30.

--Clauncher will evolve into Cannoclaw, a Water/Electric dual-type.

--Swirlix and Spritzee both evolve using the Moon Stone.

--Litleo evolves into Blazic at 15 and Mantiroar at 32, and is surprisingly, a Fire/Poison dual-type, which I believe is a first.

And other Pokemon X and Y Pokedex tidbits...

--There is reportedly a three-stage dolphin line of Water/Psychic Pokemon.

--A fire ant that is Bug/Fire will have two evolutions.

--There is a Minotaur that is Fairy/Fighting with high Attack stat.

--The much discussed but not yet seen Orot is a Grass/Ghost Pokemon, as speculated by many.

So there you have it. As always, these leaks are unofficial, but given the amount of knowledge known by the source of the leak, these Pokemon X and Y Pokedex information could very well be true.

[UPDATE]: The leaker has admitted to making up these leaks in the blog post here.

Only time will tell when Pokemon X and Y releases on October 12 for the 3DS.