 At WWDC on June 5, 2017, a refreshed model was added with Kaby Lake processors and Bluetooth 4.2 support.A Retina Display "5K" model with a resolution of 5120 × 2880 was introduced alongside the previous year's models during a keynote on October 16, 2014.This 27-inch model was given faster Haswell processors and its two Thunderbolt ports were updated to Thunderbolt 2.