The Apple blognoscenti, having digested and discarded last week’s Steve Jobs heart attack report hoax, have moved on to more pressing matters: rumors that the company’s forthcoming new MacBook computers are the products of a revolutionary new manufacturing process. The speculation started on the 9-to-5 Mac blog that Apple’s new notebooks — to be introduced Oct. 14 — may be carved out of bricks of aircraft-quality aluminum by lasers and high-powered water jets at a new state-of-the-art factory that Jobs has managed to build under the media’s radar.