This is what they mean by a retina display: 7.9-inch (diagonal) LED-backlit Multi-Touch display with IPS technology 2048-by-1536 resolution at 326 pixels per

This is what they mean by a retina display: 7.9-inch (diagonal) LED-backlit Multi-Touch display with IPS technology 2048-by-1536 resolution at 326 pixels per inch (ppi) Fingerprint-resistant oleophobic coating