Oak's Letter coming soon to players of North American Platinum
Update: It has been confirmed by the official Pokémon site of Nintendo of Europe, as well as several players of the game, that players of the PAL versions of Platinum can also obtain the key item during the same duration. This is similar to the recent distribution of the Member Card.
After the conclusion of the Member Card's distribution last Sept. 13, Pokemon.com announced recently that players of the North American version of Pokémon Platinum will be able to obtain the key item Oak's Letter from Sept. 28 to Nov. 8. Similar to the distribution of the Secret Key and the Member Card, Oak's Letter can be downloaded via Wi-Fi using the Mystery Gift feature.
Oak's Letter allows players to meet Professor Oak at Route 224, where a path will lead them to the legendary Pokémon Shaymin at Flower Paradise. It will be at level 30 with the moves Growth, Magical Leaf, Leech Seed and Synthesis.
No distribution dates have been announced or confirmed by other international official Pokémon sites.