Apple Inc. co-founder and CEO Steve Jobs still expects to return from his medical leave at the end of June, according to an Apple director who responded to an investor at the company's annual shareholder meeting Wednesday.

The investor - who was the only one to press for details on Jobs' health - had asked when the board knew Jobs planned to step away from his daily duties. Apple director Arthur Levinson responded that since Jobs announced Jan. 14 that he needed to go on leave, "nothing has changed."

Jobs, who turned 54 on Tuesday, was not at the meeting.

At one point, investors stood up and sang Happy Birthday to him.