Analyst firm NPD claims that Apple is set to expand its high-resolution MacBook Pro line with a 13.3-inch offering. In a blog post, NPD revealed findings from its examination of the ODM supply chain, which indicate that a 13.3-inch high-resolution display is already being produced in large quantities. The report also estimates that Apple will be producing fewer than two million 15.4-inch Retina MacBook Pros this year.