Coming this Sunday April 22, Pokemania will officially hit the US again. The fourth generation Pokemon game, Pokemon Diamond and Pearl is set to be unleashed on the gaming public, nearly nine years after the first North American release. While initially considered a fad, a generation of gamers has literally grown up with the Pokemon franchise. Today Nintendo revealed that the two games have received over 533,000 pre-orders, twice those of the previous release. Early feedback seems to indicate that the games balance the tried-and-true battle gameplay of the originals with appropriately updated graphics and strong Wi-Fi support. Expect this title to easily hit one million sold, and continue to drive the DS juggernaut in the US.