Apple posted this on their web site earlier today.

Apple CEO Steve Jobs today sent the following email to all Apple employees:

"Team,

I am sure all of you saw my letter last week sharing something very
personal with the Apple community. Unfortunately, the curiosity over my
personal health continues to be a distraction not only for me and my
family, but everyone else at Apple as well. In addition, during the past
week I have learned that my health-related issues are more complex than I
originally thought.

In order to take myself out of the limelight and focus on my health, and to
allow everyone at Apple to focus on delivering extraordinary products, I
have decided to take a medical leave of absence until the end of June.

I have asked Tim Cook to be responsible for Apple's day to day operations,
and I know he and the rest of the executive management team will do a great
job. As CEO, I plan to remain involved in major strategic decisions while I
am out. Our board of directors fully supports this plan.

I look forward to seeing all of you this summer.

Steve"