Apple’s high-performance laptop line was introduced in 2006 and was the first laptop of Apple’s lineup to have an Intel chip. The pro lineup were also the first to get backlit keyboards, unibody aluminum construction, and the combined, glass, trackpad.
Starting with the mid-2012 updates to the MacBook Pro, Apple split the professional-grade notebooks into standard and Retina display versions. The first Retina Display MacBook Pro was unveiled in June at Apple’s World Wide Developers Conference. The computer features a 15-inch 2880 x 1800 Retina display with screen quality that is the best on any Mac ever made and is superior to most other professional laptops. The computer also features fast quad-core processing and NVIDIA graphics. The non-Retina display version kept the 2008 unibody design but added many of the components, like faster processing, that the Retina version has. At that time, Apple also updated the 13-inch version with faster internals. The 13-inch Retina display line debuted with a 2560 x 1600 resolution screen in October.
Starting with the mid-2012 updates to the MacBook Pro, Apple split the professional-grade notebooks into standard and Retina display versions. The first Retina Display MacBook Pro was unveiled in June at Apple’s World Wide Developers Conference. The computer features a 15-inch 2880 x 1800 Retina display with screen quality that is the best on any Mac ever made and is superior to most other professional laptops. The computer also features fast quad-core processing and NVIDIA graphics. The non-Retina display version kept the 2008 unibody design but added many of the components, like faster processing, that the Retina version has. At that time, Apple also updated the 13-inch version with faster internals. The 13-inch Retina display line debuted with a 2560 x 1600 resolution screen in October.
We don't see Apple updating the MacBook Pros with new features or improved processing/graphics again until mid-2013 so now is still a good time to buy.