Stratfor is generally the best source of actual information I have found anywhere. While they do not say with confidence that Al-Zawahiri is dead, it was reported on Pakistan TV. Even if not true its good to hear that the US is attacking Pakistani madrases. while some may cringe at the thought of hitting what they think of as the equivalent to a church or a synagogue, Madrases are routinely used to store weapons explosives and teach people how to use them to kill civilians and instill terror for Islamic political gain.
There is also a rumor that al Qaeda weapons expert Abu Khabab al-Masr was also killed in this strike.
Let us all hope this is true. Party at my place?