Pokemon X and Y detail starter pokemons; shows off Mega Evolution for Venusaur, Charizard and Blastoise
During the latest Nintendo direct it was revealed that the starting pokemons will be Chespin, Fennekin and Froakie. Unlike previous pokemon games, your starting pokemon will be from one of your character’s friends in the game. The professor whom you’ll encounter afterwards will give you your second pokemon, one of the three classic starter Pokemon from Pokemon Red and Blue.
And yes, the bulbasaur, charmander and squirtle come with their own Mega Evolutions.
For a more detailed look, take a gander at the screenshots below:
In Pokémon X and Pokémon Y, uou can force your pokemon into their Mega Evolutions in battle by equipping them with a Mega Stone and activating them by Mega Ring (which you can see below). As Mega Evolutions are only temporary, pokemons revert to their original state when the battle ends.