Apple launches new Retina 4K 21.5-inch iMac, all 27-inch iMacs now feature Retina 5K displays

Apple has today announced updates to the entire iMac family. Most notably, the company has brought Retina to the 21.5 inch iMac range, with 4K resolution displays. Apple has also dropped the non-Retina 27 inch iMacs, so they feature 5K displays across the board. The new iMac displays include faster processors, upgraded graphics, improved wider color gamut and two Thunderbolt 2 ports. The new iMacs have launched alongside updates to the Magic Trackpad, Magic Mouse and keyboard.