Each year, in the weeks leading to Apple Computer’s Macworld Expo in San Francisco, the rumors and speculation begin circulating about what CEO Steve Jobs and his team will unveil during the major keynote address. This year is no exception. Many industry watchers predict that Jobs will dedicate a large portion of his Jan. 9 keynote address to describing in greater detail the so-called iTV device, which he previewed in September. Also, Jobs is expected to give the audience an update on the status of the soon-to-be released Mac OS 10.5, called Leopard.