It's being reported today in Taiwan that "Apple is expected to stop production of the 13-inch MacBook Pro in the second half of 2014." It will be replaced by thinner Retina display based models. Whether Apple will retain their 13" model or change the display size is unknown at this time.
DigiTimes' supply chain sources further note that "that Apple has been reducing its MacBook Pro prices, narrowing the price gap between the MacBook Pro and the one equipped with Retina. Apple stopped producing the 15-inch MacBook Pro in 2013 and will end production of its 13-inch model in 2014."