It was missing among the many articles that were published about the new MacBook Pro with Retina Display since its launch, an article written by a photographer. It is now done as one was published on CDTobie's photo blog. Here is a summary:

• The high resolution reduces eyestrain
  
• The gamut is a lot better than on the displays of previous models, as it now displays 99% of sRGB
  
• The glare was greatly reduced compared the glossy displays
  
• IPS technology allows to display similar colors and brightness at a wide range of viewing angles
  
• The default calibration is rather good but there is room for improvement...

This is of course only a summary, but you you will probably find the entire article interesting even if you are not a professional photographer.
By Machmeter, original by Lionel