Now This is Interesting.

Via ThinkProgess, we learn that

Following instructions from President George W. Bush to develop an updated war plan for Iraq, Defense Secretary Donald Rumsfeld ordered CENTCOM Commander Gen. Tommy Franks in November 2001 to initiate planning for the “decapitation” of the Iraqi government and the empowerment of a “Provisional Government” to take its place.

From those documents released today, we find that our hardworking planners conclude that "unlike Afghanistan, it is important to have ideas about who would rule" Iraq after the invasion. Leaving aside the obvious question of why  Afghanistan didn't require consideration, one also wonders what happened to the plan for figuring out who should rule Iraq.

[Edited for clarity}