Pokémon X and Y are doing things a little differently to most Pokémon games by offering players two starter Pokemon.
In X and Y you will receive your starter Pokémon from one of your in-game friends, allowing you the choice of Chespin, Fennekin, or Froakie. If you then visit Professor Sycamore she will offer you a second starter Pokémon. Players will be able to choose from one of three of the original starter Pokémon from Red and Blue: Bulbasaur, Charmander, and Squirtle.
Nintendo also revealed that these three original Pokémon will all have Mega Evolutions in X and Y.