Demonstration of Image-Ghosting / Burn-In Problems with the 15" Retina MacBook Pro from Apple. The video shows that only the LG-Panels are affected. Unfortunately it seems that the chance of getting a Samsung panel is only about 1/3.
You want to know what kind of Panel/Display your Retina Macbook has?
Simply start your Mac OS X Terminal and type in the following command:
http://pastebin.com/YyMLv7f6
Model numbers beginning with "LP" indicate an LG display.
A number beginning with "LSN" corresponds to a Samsung display.
Have you also got this problem? Did Apple replace your machine?