The tech giant hasn't announced that it will offer such a device, but the anticipation that it will do so this week has already caused a stir in the newspaper, book and magazine world.Not since biblical times has the arrival of a tablet been greeted with such anticipation. Apple Inc. won't reveal the details of what is widely expected to be a new tablet computer until Wednesday but it has already shaken up the publishing world, whose executives wonder whether the device will revolutionize the distribution of newspapers, magazines and books in the same way that the iPod transformed the...