From Bulbanews, your community Pokémon newspaper.
Code cards available from Sep. 2 to 30
Mega Charizard X and Mega Charizard Y
Code cards for Charizard holding its Mega Stone will be available at GameStop stores in Germany from Sep. 2 to 30.
The official site mentions that players of Pokémon X will get a Charizard holding a Charizardite X, while players of Pokémon Y will get a Charizard holding a Charizardite Y. This may be an error, as these Charizard are likely the same as the Charizard previously available in Japan, South Korea and the United Kingdom, as well as through online giveaways intended for South Korea, Taiwan and Hong Kong. In these other distributions, players of Pokémon X received a Charizard holding a Charizardite Y, while players of Pokémon Y received a Charizard holding a Charizardite X.