I just got my 2.3/16/256 RMBP... thought I noticed something was off, and I then compared it to my 8GB model (that I'm returning soon). My new one is noticeably more yellow than my old one, and it also appears to be more dim, even at full brightness. I ran the LCD identifier in Terminal and found that my new RMBP has the LG model, LP154WT1-SJA1, whereas my old one has the Samsung model, LSN154YL01001. But when I got my old model, I thought that one had a pink tint. However, both are 'tinted' compared to my iPhone, but who's to say my iPhone isn't tinted blue...
I took a picture comparing the two:
Image
HQ:
http://i.imgur.com/xPBIM.jpg
Left is LP154WT1-SJA1 (new RMBP), right is LSN154YL01001 (old RMBP).
I don't even know what real whites on a laptop screen look like anymore, lol. None of the calibration results I get satisfy me. I don't know whether I should send it in, wait and see if it improves, or what.