From Bulbanews, your community Pokémon newspaper.
202 track X and Y soundtrack also announced
Mega Kangaskhan using Mega Punch
A new Mega Evolution, Mega Kangaskhan, has been revealed at the 2013 Pokémon World Championships. As Mega Kangaskhan, the baby emerges from the pouch and participates in battle.
Mega Kangaskhan will have the Ability Parental Bond, which lets it attack twice.
announcing the Pokémon X•Y Super Music Collection
In addition, it has been revealed that the "Pokémon X•Y Super Music Collection" will be available for purchase via iTunes around the world in November 2013. This soundtrack will contain 202 songs from Pokémon X and Y.
Credit to @TheJWittz for the Mega Kangaskhan image and information about the Ability. Credit to @pklug for initial reveal of soundtrack.