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CUPERTINO, CA - OCTOBER 16: Apple CEO Tim Cook speaks during an Apple special event on October 16, 2014 in Cupertino, California. Apple unveiled the new iPad Air 2, iPad mini 3 tablets and the iMac with 5K Retina display. (Photo by Justin Sullivan/Getty Images)

CUPERTINO, CA - OCTOBER 16:  Apple CEO Tim Cook speaks during an Apple special event on October 16, 2014 in Cupertino, California.  Apple unveiled the new iPad Air 2, iPad mini 3 tablets and the iMac with 5K Retina display.  (Photo by Justin Sullivan/Getty Images)

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CUPERTINO, CA - OCTOBER 16: Apple CEO Tim Cook speaks during an event introducing new iPads at Apple's headquarters October 16, 2014 in Cupertino, California. (Photo by Justin Sullivan/Getty Images)

CUPERTINO, CA - OCTOBER 16:  Apple CEO Tim Cook speaks during an event introducing new iPads at Apple's headquarters October 16, 2014 in Cupertino, California.  (Photo by Justin Sullivan/Getty Images)

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CUPERTINO, CA - OCTOBER 16: Apple CEO Tim Cook speaks during an Apple special event on October 16, 2014 in Cupertino, California. Apple unveiled the new iPad Air 2 and iPad Mini 3 tablets and the iMac with 5K retina display. (Photo by Justin Sullivan/Getty Images)

CUPERTINO, CA - OCTOBER 16:  Apple CEO Tim Cook speaks during an Apple special event on October 16, 2014 in Cupertino, California.  Apple unveiled the new iPad Air 2 and iPad Mini 3 tablets and the iMac with 5K retina display.  (Photo by Justin Sullivan/Getty Images)