Apple will reportedly outfit the 21.5-inch iMac with a 4K display

Apple will reportedly outfit the 21.5-inch iMac with a 4K display:

Almost a year ago, Apple put a Retina display inside its 27-inch desktop. A report from 9to5Mac says we could see a high-res panel on the smaller 21.5-inch model soon as well. The word comes from Mark Gurman, who has a solid track record for news l...