Here are the pre-release Pictures from Pokémon Mystery Dungeon: Blazing, Stormy & Light Adventure Squads. Click the Link to view the picture:

On the Beach
Inside A Dungeon
Inside A Dungeon
Inside A Dungeon - Monster House
Inside A Dungeon - Monster House
The Pokémon in Light Adventure Squad
The Pokémon in Blazing Adventure Squad
The Pokémon in Stormy Adventure Squad
The Kecleon Store
The Kangaskhan Bank
The Gastrodon Store
The Duskull Stall
The Town in Stormy Adventure Squad
The Town in Blazing Adventure Squad
The Town in Light Adventure Squad
Arceus with the Splash Plate
Arceus with the Flame Plate
Arceus with the Zap Plate
Slowking has a role
Slowking Addresses the Pokémon
Slowking, Aron & Swinub
Water Pokémon in Town
Fire Pokémon in a Dungeon
Two Pokémon Towers Fight
Cyndaquil & Magmar as a 2 Pokémon Tower
Piplup, Prinplup & Empoleon as a 3 Pokémon Tower
Pichu, Pikachu, Gengar & Lapras as a 4 Pokémon Tower
Piplup evolves into Prinplup
Piplup evolves into Prinplup
Merging the save file to get multiple Pokémon