The sources have yet to specify whether the device will use Apple's Retina Display technology to enhanced resolution, but market observers said it is highly likely based on the development of past Apple products such as the iPhone and 9.7-inch iPad series.
Given how heavily the iPad Mini has been ridiculed in the press for its current screen, unimpressive specs, and high price, this comes as no surprise. Also, it was more than little silly of Apple to launch 2 devices with Retina Displays and then follow them with the current iPad Mini. They set themselves up for ridicule.
It's my guess that Apple will try to repeat past successes and double the resolution of the screen on the iPad Minito to 2056x1536. This would give the iPad Mini a DPI of 320 pixels per inch, and that is about the same as the Retina display on the iPhone.
I'm sure that some are thinking that that this is obvious, but until I compared the resolutions of the hypothetical iPad Mini screen to the one on the iPhone 5 I didn't know for sure that Apple even could squeeze in that many pixels on the 7.9" screen.
The math must come first. Sometimes that alone is enough to debunk a rumor.