Apple CEO Tim Cook addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple Senior Vice President of Worldwide product marketing, Phil Schiller, addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple CEO Tim Cook addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple CEO Tim Cook addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple CEO Tim Cook addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple CEO Tim Cook addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple's Senior Vice President of Software Engineering Craig Federighi addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple Senior Vice President of Worldwide product marketing, Phil Schiller, addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple CEO Tim Cook (R) welcomes Craig Federighi, vice president of Software Engineering, on stage during the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple Senior Vice President of Worldwide product marketing, Phil Schiller, addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
The new cylindrical Mac Pro is displayed at the Moscone Center during the 2013 Apple WWDC in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple CEO Tim Cook addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple's Senior Vice President of Software Engineering Craig Federighi addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
Apple's Senior Vice President of Software Engineering Craig Federighi addresses the 2013 Apple WWDC at the Moscone Center in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
The new cylindrical Mac Pro is displayed at the Moscone Center during the 2013 Apple WWDC in San Francisco, California, the United States, on June 10, 2013. (Xinhua)
The new cylindrical Mac Pro is displayed at the Moscone Center during the 2013 Apple WWDC in San Francisco, California, the United States, on June 10, 2013. (Xinhua)