Visuals on the 3DS are about as good as they get on a handheld. And that's without even factoring in 3D effects.
Stereoscopic camera, gyro sensor, tilt accelerometer sensors, touch screen, analog nub... I'm amazed how much Nintendo was able to pack into this device.
If movie/video support is strong from studios, I'd buy one just to watch 3D movies on the go.
This is a real winner of a device.
Of course the question that begs to be answered is: MSRP?