Apple Corporation CEO Steve Jobs speaks during his keynote speech at the Apple Worldwide Developers Conference in this file photo taken in San Francisco, California on June 9, 2008. Jobs underwent a liver transplant operation about two months ago and is expected to return to work by the end of June, The Wall Street Journal reported on June 20, 2009. Reuters Pictures logo Reuters Pictures 32 months ago

Apple Corporation CEO Steve Jobs speaks during his keynote speech at the Apple Worldwide Developers Conference in this file photo taken in San Francisco, California on June 9, 2008. Jobs underwent a liver transplant operation about two months ago and is expected to return to work by the end of June, The Wall Street Journal reported on June 20, 2009.