Covarr

The health and safety warning is from the DS in Japanese mode. Not just similar, but actually the same. It is a screenshot. That might explain the reason for having the titlecards thing.

They even have a boxart with the title "New Super Mario Bros." Why would they make a boxart if it wasn't even the right title?

I'm actually afraid of the 3D engine. Even if the game plays in 2D, I'm worried that the elements from Mario 64 and Mario Sunshine will not fit well in a 2D world.

Scans of the instruction manual are already up; we got them with those yellowed photos from the FCC. Any surprise would have to be in there, unless it's a bundled game at a lower price than the current DS, or something like that.

I just looked through the manual. It seems to have the same firmware, with the same pictochat. This one is probably more piracy-proof, though.

The GBA screen has a different resolution than the DS. I don't see how GBA screens would work.