Apple released the third generation of MacBook Pro with a 15 - inch screen during WWDC 2012 and discontinued the 17 - inch variant. The previous generation 13 - and 15 - inch unibody models continued to sell with updated processors. The third generation model was a quarter thinner than its predecessor and introduced the Retina Display with a much higher screen resolution. A 13 - inch variant was released in October 2012.
when did apple introduce retina display on macbook pro
2012 2012