I think enough info has been leaked and enough people in power have hinted that the classified sections of the 9/11 report revolve around Saudi Arabia's direct involvement in 9/11. I suspect the leaks and hint dropping are a way to ease public rage if the classified report ever does surface.
In fact one of the former chairs (Senator Bob Graham) whom sat on the 9/11 Senate Intelligence committee has openly stated this. Yet the information is classified leaving speculation.
There are also rumors that bin Laden was being "housed" by Pakistan and his expenses were covered by the Saudi's until US intelligence found him by doing what they do.
IMO I think it's one of the key reasons Obama has kept the Saudi's are arms length. I also think it's why Obama doesn't seem to give a rats ass what the Saudi's think in our negotiations with Iran..
Would do you think the public's reaction will be if this info is released?
related..
Obama under pressure to release secret pages of 9/11 report 'showing Saudi Arabia financed attacks' - Telegraph