Plans looking similar to a Wiimote/Phone layout found in patent office:
http://www.slipperybrick.com/2007/02/wii-phone/
http://www.slipperybrick.com/2007/02/wii-phone/
http://ds.ign.com/articles/762/762076p1.html
It was filed in 2001, that's a long time ago. And that image on the slipperybrick site is a mock-up by a wishful fan by the way.