The rumors of a 3DS redesign are coming back. This IGN image is pretty amazing: http://media.ign.com/games/image/article/122/1220512/Redesigning3DSInfographic_3_1331499079.jpg
Here is the original article: http://ds.ign.com/articles/122/1220512p1.html
This article kind of summarizes a lot of the rumors out there: http://www.joystickrobot.com/2012/03/article-005-nintendo-3ds-redesign.html