Apple chief executive Steve Jobs is back in the public spotlight for the first time in over half a year, triggering a standing ovation and helping the company's shares gain nearly 1%.
Looking gaunt but energetic in black turtleneck and jeans, Mr Jobs, 54, took the stage and thanked everyone in the Apple community for their "heartfelt support" during his lengthy absence.
It was Mr Jobs first appearance at a public event since he returned to work in June following six months of medical leave, during which he underwent a liver transplant.
He started by announcing a new version of Apple's popular online media store, iTunes, and updated software for the iPhone.
