Speaking to CNET, Semenza believes that production of Retina displays for the iPad mini could begin in Q3 of 2013, and that it is possible that the iPad mini could launch around that time as well. Either that or Q4 instead. As to the resolution of this alleged Retina iPad mini, Semenza claims that his data points at a 2048×1536 resolution, putting it on par with the latest iPad, albeit at a higher PPI given its smaller display. There is a trade-off as Semenza thinks that fitting such a high-res display into the iPad mini could be a challenge, so there is a possibility that the next-gen iPad mini could end up being thicker in order to accommodate it.
A thicker iPad mini with a much higher display, seems like a fair trade-off, wouldn’t you agree?