Using this article http://www.tuaw.com/2012/03/01/retina-display-macs-ipads-and-hidpi-doing-the-math/ http://www.tuaw.com/2012/03/01/retina-display-macs-ipads-

Using this article http://www.tuaw.com/2012/03/01/retina-display-macs-ipads-and-hidpi-doing-the-math/ http://www.tuaw.com/2012/03/01/retina-display-macs-ipads-and... and using iPhone 4 with an assumed viewing distance of 11 inches to define "Retina" I came up with this formula for the diagonal screen size 0.000275774245 * sqrt(1 + (aspect ratio)^-2) * horizonal resolution * viewing distance Now, if we assume that the iPad mini will have the same resolution as iPad 2 and the same viewing distance of 16 inches then for it to be advertised as having a Retina display it would need to have a 5.6" screen. This probably means the iPad will be an entry device, lacking a Retina display.