Not exactly.
What has changed between Dec 2001 and Jan 2004?
Obviously he has changed his appearance.
Bin Laden, and his entire AQ organization, is starting to seem ridiculous.
Yeah, no threat whatsoever. (/sarcasm)
There is zero evidence that he is dead. There is evidence aplenty, including intelligence from multiple countries, and these audio tapes that have been authenticated and refer to recent events, that point to his being alive.
Furthermore, our government has outright said he's alive, and spare me the "they're just saying that for strategic reasons" nonsense. There is zero evidence that that's how our guys handle these kind of things. Just the opposite.