Apple CEO Steve Jobs poses with the new iPhone 4 during the Apple Worldwide Developers Conference in San Francisco, California in this June 7, 2010 file photo. Apple Inc's Steve Jobs said the board has granted him medical leave to concentrate on his health. During his leave of absence, Chief Operating Officer Tom Cook, will be responsible for day to day operations, the CEO said in a media statement January 17, 2011. [Xinhua/Reuters]