Each year, in the weeks leading to Apple Computer's Macworld Expo in San Francisco, <A HREF="http://www.eweek.com/article2/0,1759,2079039,00.asp?kc=EWWKNEMNL010507EOAD">the rumors and speculation begin</A> 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.