The Pikachu DS Lite Ultimate Bundle, featuring a limited edition Nintendo DS is eye-catching Pikachu yellow with a Pikachu emblem on the corner has been announced and is now available at Pokemoncenter.com. You won't find this Nintendo DS Lite in stores and the quantites are very limted. It comes bundled with everything a Trainer could possibly need:

Pikachu DS Lite Ultimate Bundle
* Bundle includes Limited edition Pikachu Nintendo DS Lite, Pokemon Diamond and Pokemon Pearl game cartridges, a scenario guide for the games, and a Pokedex
* Limited quantities available
* Great gift!
* LIMIT 2 PER CUSTOMER
* Price: $345.95 USD

Source: Pokemoncenter.com