iFixit has taken apart a MacBoor Pro Retina display and the results are compelling:
“What’s astounding is that Apple’s engineers managed to cram four times the pixels of the previous 15″ MacBook Pro into a display assembly that is (nearly) the same size. The big savings here is weight, not thickness. The Retina display weighs in at 673 grams, while a standard 15″ MacBook Pro display tips the scale at 908 grams. That’s a solid 25% weight savings.”
To say that I covet one of these is a gross understatement.