Bin Laden issued this tape, which urged attacks on Iraq and Israel:
http://news.yahoo.com/s/ap/20071229/ap_on_re_mi_ea/bin_laden_tape What's interesting about this was the complete lack of mention of the Bhutto assassination, which you'd think he would be crowing over for any number of reasons (she's a liberal, she's a woman, she's pro-American, etc.) Unless he says something about Bhutto in the very near future, I think we should assume he's either dead or so badly wounded that he can't speak on camera.
(If it takes weeks to months for him to comment, it means that they put the tape together from stock footage).