Zelda DS was revealed today at the GDC, they did play a video of it but as far as I know it's not up on any site. I did find this image though...
EDIT: Video.
http://media.nintendo-europe.com/compel/video/cri9US3Ag5tBu3OkYw7e30hIK1Rv3Sa8.movhttp://www.nintendo-europe.com/NOE/en/GB/news/article.do?elementId=5JIzKiVx5r0Gu_uNPnTPRZMbliXeeJM1
EDIT: Video.
http://media.nintendo-europe.com/compel/video/cri9US3Ag5tBu3OkYw7e30hIK1Rv3Sa8.movhttp://www.nintendo-europe.com/NOE/en/GB/news/article.do?elementId=5JIzKiVx5r0Gu_uNPnTPRZMbliXeeJM1