(http://www.nintendo-insider.com/wp-content/uploads/2013/10/pokemon-x-y-patch-qr-code.jpg)
Source (http://www.nintendo-insider.com/2013/10/25/pokemon-x-y-patch-now-available-through-nintendo-eshop/)
Yes a new update has arrived today. Just scan this code to download it from the eshop. It takes up around 200 blocks.
What the Update Does
1. Prevents the occurrence of a rare issue in which players are unable to resume playing after saving their game in certain areas of Lumiose City. Players already affected by this issue will also be able to resume playing normally after downloading and installing this update data.
2. Prevents errors which sometimes occur when using certain functions of the GTS (a feature allowing players all around the world to exchange Pokémon).
Or when you open the eshop you will be prompted to download this update anyway.