The rumor cycle regarding the forthcoming iPad mini with a retina display has now reached the leaked-images stage. Pictures of the supposed new device were recently posted to an Internet forum in China. The images show the back casing of the iPad mini, which is, tellingly, a bit thicker than the casing of the current iPad mini. It suggests the next model will have a retina display, because a larger case is needed to accommodate the larger battery necessary to power the higher-density display.