The new 15-inch MacBook Pro weighs 4.46 lbs and is .71-inches thick. The Retina Display's resolution is 2880x1800 pixels (four times more pixels than the previous generation MacBook pro). Pricing starts at $2,200.
Apple says the Retina Display on the MacBook Pro 15-inch has a 178 degree viewing angle, 29% higher contrast than the previous model, and 75% less reflection in the screen than the previous model. Built in applications like iTunes, iPhone, and iMovie have been improved to take advantage of the new display.
The Retina Display version of the 15-inch MacBook Pro comes with the third-generation Intel Core i7 quad-core processor, Nvidia GeForce FT 650M discreet graphics, up to 16GB of 1600MHz RAM, and up to 768GB of flash storage.
Note the two Thunderbolt ports...
The 13-inch model has a 1280 x 800 display (starting at $1,500) and a dual-core Core i5 or Core i7 processor; the 15-inch model has a 1440 x 900 display (starting at $1800) and a Core i7 quad-core processor.
The 11-inch MacBook Air starts at $1000; the 13-inch MacBook Air starts at $1,100. They both come with either the dual-core Core i5 or a Core i7 processor.