Version 1.2 has been released for Pokémon X and Y and is available from the eShop. This patch is required to go online with the games as of December 12th, 2013. This patch fixes the exploits which allowed players to see Pokémon data being transmitted during wireless communication (be it battles or trades). We expect that after today’s Pokémon Global Link is finished with maintenance, we’ll also see the return of Rated Battles. Additionally this fixes:

>Some Pokémon not learning certain moves after evolving in a Wonder Trade
>Captions not being unlocked for PR Videos

To update your game:

If you have a physical copy of the game, have the game card inside the 3DS.
Go to the home screen of your 3DS and select the eShop option (the shopping bag).
Search Pokémon
Download the patch for the game you have (X or Y)
The patch is 236 blocks. If you did not download Version 1.1, this patch includes that.