This is the opinion of an editorial in the Washington Post today. They say, "Wikileaks's leaks mostly confirm earlier Iraq reporting," and then go on to explain how. The only thing they left out is that the leak confirms what we already knew, they did find chemical WMD's. Anyone who was actually paying attention and reading all the blogs, especially the military blogs, would have known that all along. And as for the rockets, early on one or more of the Iraqi bloggers wrote of seeing trucks with missiles rolling on into Syria in the dark of the night.
Go read the article for all they confirm that we already knew.