Apple CEO Tim Cook speaks at the event introducing the new iPhone at the company’s headquarters October 4, 2011 in Cupertino, California. The announcement marks the first time Cook introduces a new product since Apple co-founder Steve Jobs resigned in August.

This is a live blog from CNBC Tech Correspondent Jon Fortt, reporting from Apple's "Let's Talk iPhone" event at the company's corporate headquarters in Cupertino, California. 

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The event is being hosted by CEO Tim Cook and is the company's first major product launch since the departure of Steve Jobs.