Steve Jobs just got through announcing new MacBook lines in Cupertino. The MacBook, the Pro, and the Air all got revved. The old line of plastic-body MacBooks drops in price by $100, to $999. The new MacBooks have a metal body and multi-touch trackpad, just like the new Pros. The Pro features two NVidia graphics chips. Quoting Jobs: "With the 9400M, you get 5 hours of battery life, with the 9600M GT you get four hours of battery life. You choose." In summary: "We're building both [MacBook and Pro] in a whole new way. From a slab of aluminum to a notebook. New graphics. New trackpad, the best we've ever built. And LED-backlit displays that are far brighter, instant on, far more environmentally responsible." They are shipping today and should be in stores tomorrow. Oh, and one more thing: Steve's blood pressure is 110/70.