iMac with Retina 5K display delivers an amazingly immersive user experience. With a resolution of 5120 x 2880, iMac with Retina 5K display has four times more pixels than the standard 27-inch iMac and 67 percent more pixels than a 4K display. Text looks as sharp as it does on a printed page, and you can see more of your high-resolution photos with pixel-for-pixel detail.

I just saw the new iMac in the hands-on area after the event and it is incredible.