Trouble with manufacturing Retina displays is hampering the introduction of a new 13-inch MacBook Pro, claims DigiTimes. Shipments of the computer are said to have been slated for September, but "weak yields" of Retina screens allegedly pushed them into October. Production problems are also reportedly affecting two other products, namely a new iMac and a 7.85-inch iPad, more commonly nicknamed the iPad mini. Like the 13-inch Pro, delays pushed shipments a month over into October.