That's my question. I've seen more than 12 previews of the 3DS but none show the demos, apart from the Hardware itself. Various game sites from E3, or other recent Nintendo Events (France, UK etc.) show only the hardware. I've managed only to look at the official screens of the 3DS games and some user "shaky" videos from E3. Why all this secrecy? Someone at BBC I think claimed that we can't see 3D and that's why they are not showing gameplay footage (which is true).