I'll update this as good info comes in.

Foreign Policy has a timeline of the mission.

Taiwanese animation of how it may have gone down. (Warning: Graphic content. Not kidding.)

CSIS: "What might have been a decisive blow in 2001 or 2002 may have far less effect today."

BBC has some satellite imagery and background info.

Terrorism expert Daniel Byman, who has written on this question before [gated], says Osama is dead but al Qaeda isn't.

And Peter Feaver, a professor in the Security, Peace, and Conflict Studies program at Duke, shares these sensible remarks.