Today, Apple updated its entire iMac Desktop lineup. Features common to each iMac include Intel Kaby Lake processors, 43% brighter Retina displays (500 nits), increased memory capacity (up to 32GB on the 21.5" and up to 64GB on the 27"), upgraded graphics across the board – with 4K iMacs and above getting discrete graphics, and two Thunderbolt 3 ports. These systems will begin shipping today. The new iMacs: