gameplay

Hopefully I can eventually catch one friend...

"Watch the latest gameplay footage from Pokémon X and Pokémon Y! Discover the new Fairy type, meet Noivern and Vivillon, and check out all-new Pokémon game features."

For a limited time Mewtwo will be available over Nintendo Wi-Fi connection service starting February Twelfth. Mewtwo will be available with "an exclusive move that Mewtwo cannot normally learn."

Source: Kotaku

So in Anistar City there's this house where an old man who lost his wife lives. He says that his life has become lonely since then, and asks if he can take care of one of your Pokémon, that must be level 5 or under. If you do so and leave one there, when you come back a few days later, you'll see an empty house with a Pokéball with your Pokémon inside and this letter.