The old Pokemon money train rides again. On Friday, Nintendo announced that two more installments of the series - Pokémon HeartGold and Pokémon SoulSilver - are coming to the DS.

HeartGold and SoulSilver are remakes of Pokemon Gold and Pokemon Silver, which were released almost a decade ago for Game Boy Color. The remakes will feature enhanced graphics and sound, touch-screen support, and "a host of surprises."

The two games are set to be released in Japan on September 12th. Europe and North America will receive them in Spring 2010.