Apple shares have jumped another 1% as speculation grows that it will launch a new touch-screen computer.

Over the past two weeks the iPhone manufacturer's share price has been pushed up steadily by the rumours.

Apple has booked San Francisco's Yerba Buena Centre on 26 January for a "major product announcement" without giving any further details.

The company has previously used January launches to unveil products including the iPhone and the MacBook Air.

The venue is the same used by Apple's chief executive Steve Jobs when he made his return earlier this year following a liver transplant.

Full story: BBC News