Thanks, Jack. That's bad news. I love the iPad 3 screen and its vibrant colours, and I'd hate to go back to something inferior, especially given the overblown iPad mini Retina price.
I'm also delighted by the iPhone 4 screen -- a very old phone by now; I wonder what its colour gamut might be. iPhone 4 displays colours a bit differently from iPad 3, so I suspect it might be well below 100% gamut. I'd like to know the exact percentage value for iPhone 4, and how it compares with the 63% of iPad mini Retina.
More and more articles popping up about this now, all thanks to AnandTech, with many folks now calling the colours on the iPad mini Retina "washed out",

which really sounds bad:
http://9to5mac.com/2013/11/18/retina...-7-and-others/
http://www.zdnet.com/retina-ipad-min...ys-7000023349/
http://www.imore.com/retina-ipad-min...tention-issues
http://www.macrumors.com/2013/11/18/...-and-accuracy/