The official Japanese Pokémon Trading Card Game website has relaunched for the release of Pocket Monsters Black and White. The new site currently doesn't feature very much as most of the old content has been removed. The site includes: A beginners section which gives the basics of the game, a products section listing the newest BW TCG products, a how-to section, a Question and Answer section and an event page.

The Official Japanese fan club, Pokémon Daisuki will be enabling the Pokémon Card Game Network (ポケモンカードゲームネットワーク) section in late October.

Source: http://www.pokemon-card.com/