Nintendo has released new screens of Pokémon Mystery Dungeon: Explorers Of Sky.
The game is an extended version of Pokémon Mystery Dungeon: Explorers Of Time And Darkness, much in the same way that Pokémon Platinum was an extended version of Diamond and Pearl.
The game has new Pokémon you can play as, as well as new "Special Episodes" that didn't feature in Explorers Of Time and Darkness.
You can also trade items with owners of Explorers Of Time and Darkness to "see what happens". Sounds interesting.