Wed, 13 Jun 2012 07:59:05 PDT As noted by 9to5Mac, Apple's retail stores have begun installing new window displays showing off the new Retina MacBook Pro mounted on a pedestal with a massive model of the machine as a background. As we reported earlier today, Apple retail stores have been receiving display models of the new Retina MacBook Pro, but shipments of stock are just starting to trickle in. Those looking for a stock model may be interested in stalking their local stores to try to obtain one, as new online orders are currently seeing shipping estimates of 3-4 weeks.