Apple chief executive officer Steve Jobs resigned last evening, effective immediately. Apple made no mention of Jobs' health in its statement about the change, but Jobs alluded to it in a letter he sent to the company's board.
"I have always said if there ever came a day when I could no longer meet my duties and expectations as Apple's CEO, I would be the first to let you know," Jobs wrote. "Unfortunately, that day has come."
Jobs has been on medical leave from the company since January for an undisclosed medical condition, although he continued to make Apple's major strategic decisions.
Leander Kahney, editor and publisher of CultofMac.com and author of "Inside Steve's Brain," joins American Morning today to discuss what Jobs' resignation says about his health and to weigh in on what it means for the Apple brand.