The pic where Yamauchi is holding a GT5 package only shows ONE case being the actual game - the black one. You can clearly see the top case is a Gran Turismo 5 case. You can tell because you can see the Japanese CERO rating (like our American ESRB), and the transparent white PS3 case, with the new PS3 logo. And the bottom two look like instruction booklets, or car booklets that detail all of the cars featured in the game (this is something Polyphony has done many times in the past).
That's all it is. Three Blu-Rays this will NOT be.