The official Pokémon Korea website had two big announcements today.

First, it was announced that Pokemon Platinum would be released in South Korea on July 2. Second, they announced that Regigigas would be distributed in South Korea on June 20th to June 21st 2009. Users will require a Korean version of Pokémon Diamond or Pearl along with their Nintendo DS in order to get the Regigigas.

Source: http://www.nintendo.co.kr/