I thought I'd post this here, too (in addition to the "yellow tint" thread):
The iPad Mini /w retina I received today has a perfectly even display, but there is the FAINTEST image retention using the IR test page. It's so faint with the extreme IR test that I don't think I'm ever going to see it normal use.
It's a keeper. Serial starts DLXLQ - meaning it was manufactured last week, i.e. its from a very fresh batch.
The odd thing is, I ordered it from the online Apple Store on November 22nd, it shipped in two days directly from China, and it arrived today. Thats a day short of ONE WEEK from order to delivery (to Finland). Amazing.
As for the display issues, apparently Apple are using two display technologies with the retina iPad Mini: IGZO (IPS) and a-Si Backplane (FFS). See the specs table at:
http://www.iclarified.com/35866/ret...ent-significantly-outperformed-by-competitors
This could explain why 1) some suffer from uneven screen tint with no image retention, and 2) some have perfectly even screen coloration but show image retention to varying degrees. Luckily, mine has so faint IR that I can live with it, even though Im quite OCD when it comes to display quality.
On another note, compared to my iPad Air, the iPad Minis colors are indeed a bit subdued. In all honestly, most people wont notice it unless they have the iPad Air (or iPad 2/3/4 with better gamut) and Mini side-by-side.