Nintendo have announced a camera for the DS, which will be bundled with Adult Face Training...

The camera fits in the GBA slot on the DS Lite and also comes with a stand. Details on the camera's resolution are yet to be revealed

Unfortunately, from the looks of it, the DS Camera will be incompatible with the original style DS (due to a larger GBA slot which will cover the camera), and no actual camera software (like the Game Boy Camera) is included. Instead, you get Adult Face Training which helps you keep you face muscles in shape. A image of a face appears on the left screen (DS is held sideways) and the image from the camera on the right. You have to match the face on the left to flex your face muscles.

The game and camera is due out in Japan on the 2nd August and is co-developed by Intelligent Systems.