Mobility and music are expected to take centre stage tomorrow as Steve Jobs, Apple's chief executive, introduces new products at the computer maker's annual MacWorld conference in San Francisco. While Apple has kept quiet about its plans, analysts familiar with the company's suppliers in Taiwan say Mr Jobs could unveil a small, "sub-notebook" computer and other portable products. Mr Jobs is also expected to reveal updates to Apple's iTunes music store, including a new video-on-demand service that will allow iTunes users to download and rent a film. (Financial Times)