Pokémon Sunday showed a preview screenshot of Pocket Monsters Platinum from next weeks episodewhich indicates that the Sinnoh Dex will expand by an additional 59 Pokémon.

Known new Sinnoh Dex numbers include: Glalie at #207, Froslass at #208, at Giratina at #210. It can also be assumed that Snorunt is #206.
Pocket Monsters Platinum will be released in Japan on September 13th and is the third Generation IV main series game.

A higher resolution image from the Pokémon Sunday episode is available on our Imageboard.

I\'ve never thought Sinnoh Pokedex would be 210. I thought it would be about 170 Pokemon.

Wow lets hope that our new Sillouettes can be part of this addition. Crush is right, I thought 210 was a rather big stretch.

If Froslass is #208, where would Dialga and Palkia would be replaced??? I predict #209 would be Shaymin! And Dialga, Palkia and other legendary Pokemon will be in National Dex!

Dialga and palkia may be before Froslass like how the Dragonite set was after the birds in RBY. I think that 209 will be shaymin too.