What's a MacBook, MacBook air, and MacBook pro?
The MacBook used to be Apple's "Low End" laptop before it was discontinued in July of 2011; this left just the MacBook air, and MacBook Pro models, both of which were just updated on June 11, 2012 during Apple's World Wide Developers Conference (WWDC).
The MBAir starts at $999 with an 11" screen, 64 GB of flash storage, a 1.7GHz i5 CPU, 4GB of memory, and weighs only 2.38LBs.
The MBPro starts at $1,199 with a 13" screen, 500GB of hard drive space, a 2.5GHz i5 CPU, 4GB of memory, and weighs 4.5LBs.
Both have added combination USB 2 and USB 3 ports, and 2 Thunderbolt ports, but the MBPro also offers Gigabit Ethernet, FireWire 800, 2 additional USB 2/3 ports, and an SDXC card slot.
Along with these updated models, a brand new 15" MacBook Pro Retina Display has been added to the lineup.
The Retina Display offers a mind boggling 2,880 x 1,800 resolution, more than 5,000,000 pixels. It comes with a 2.3 or 2.6GKz i7 CPU, 8GB of memory, 256GB of flash storage, Intel HD Graphics 4000, and an NVIDIA GeForce GT 650M GPU with 1GB of GDDR5 memory; it's also only 0.71" thick, weighs in at 4.46lb, and has a built-in HDMI port.