Apple CEO Steve Jobs turned up at a press conference yesterday at which Apple showed the format of the company's new mini-retail stores.

This was his first public appearance since he went through cancer surgery in late July, after which he took a month off to recover.

"Yes, I'm back," he smiled to reporters. The Associated Press reports the CEO appeared healthy, and made a few brief remarks, smiled and "proudly walked along the gleaming white floor of the store". He did not mention his illness.