Nintendo has announced that the Pokémon Global Link for Pokémon Black and White and their sequels will be closed completely by January 2014.
The closure will begin in October, alongside the launch of Pokémon X and Y, with certain functions being shut off ahead of a full closure in January. Once the service is closed “all connection functionality with these video games will become unavailable.”
A new Global Link will open for Pokémon X and Y in October, according to Nintendo.