I’m still reading up, but my guess is that this story will not change the conventional wisdom much because peoples’ minds are made up and while I think this story is significant it’s just not enough to change minds. Part of the blame falls on the Bush White House which clearly decided a long time ago to stop aggressively defending this aspect of the decision to go to war. This always struck me as proof — contra the Bush-bashers — that he went to war in good faith. If it had all been a conspiracy, the evil neo-cabal would have protected their cover story a lot better.
Regardless, the White House clearly made the decision that WMDs aren’t part of the story any more. And you’d need to find more than this to change that.
But that hardly absolves the press and others from their obligation to deal with these new facts.