Apple just introduced its second Retina display MacBook: the 13-inch MacBook Pro, which starts at $1,699 and is shipping today. Just months after the 15-incher was gifted with a display that packs more pixels than your existing HDTV, the 13-inch sibling is receiving similar treatment. Unveiled today in San Jose alongside the iPad mini, the intensely dense 13-inch MBP is true to the
