Replacing the Nvidia 9400M and 9600M GT cards of previous gen models is the GeForce GT 320M and 330M, with a choice of graphics memory options. The 15 and 17-inch MacBooks
The 15-inch model also gains the option of a higher resolution screen with either glossy or matte coatings: 1680 x 1050 pixels against the standard 1440 x 900. All other features are pretty much the same, as is the starting price for each model: $1,199 for the 13-inch MacBook Pro, $1,799 for the 15-inch version and $2,299 the 17-inch behemoth. The new notebooks will start shipping within 24 hours, according to Apple's store.
*Update: AppleInsider informs that the GPU switching technology used on the MacBooks was developed in-house by Apple and is not Nvidia's Optimus.