Something, however, has changed: I had put on the new MacBook Pro with Retina Display to me recently, and here's the rub:
Adobe supports Retina Display so far neither in Photoshop, even in Illustrator or InDesign.
An update is indeed popular, but when the white is so far, if at all, only Adobe itself.
Currently all programs are fully pixelated, making it very difficult an accurate and precise working, making almost impossible.
So if a MacBook and the associated CS6 is planning to buy, should probably wait a bit until Adobe has come to the effect of the feet.