My Twitter feed was ablaze starting about an hour ago with variations of the above headline. Many news agencies are also reporting the same. The report is that he'll be gone through June. But I'm not sure. I agree with Ryan Block:

Jobs finally stepping down (even if only for a few months), huh? I dunno, something in my gut tells me he might not be back.

We'll see what happens over the coming months. Bot one thing can be certain: nearly every day most, if not all, of the tech blogs will be speculating and looking for information from their "sources" about Jobs' health.
I just hope the man can get some peace.