Apple will start production of a new 15-inch MacBook Pro in April and a new 13-inch MacBook Pro in June, according to DigiTimes‘ sources from the upstream supply chain. Rumors have been going around for a while now that the next MacBook Pro design will look similar to the MacBook Air, but there is still no actual proof of this new design. There is also speculation that the next MacBook Pro models will feature a high resolution Retina display.