According to a Japanese newspaper (translated by blog.Wired.com), Nintendo is set to release a new Nintendo DS. Not a new color, but a brand new Nintendo DS with camera support and music playback capabilities.
I don’t quite see how the music playback will factor into gameplay, but the camera support could lead to some quirky fun. Or I’m wrong and Nintendo is just looking for an excuse to sell you a new piece of hardware. I wouldn’t be surprised if it was the latter.