The Pokémon Company plans to release the Nintendo 3DS LL Pikachu Yellow with a Pikachu design at their official Pokémon Center shops. The pre-order period is from August 25 to September 14, but will be closed as soon as the planned number has been reached. Delivery will begin on September 15. The price is 18,900 JPY.
This item will only be sold in Japan, there is a limit of one per person, and the full price must be paid in advance. They may be picked up at a store or delivered, with an additional delivery charge of 600 JPY required in the case of delivery.
Source:
http://blog.anislo.jp/2012/08/nintendo-3ds-featuring-pikachu-released.html