TL;DR a quote from this article: "What can we conclude from this warrant? Not a whole more than is obvious." The real question is why has FBI suddenly developed interest in this just 3 months before the midterms? So the "top secret" docs have been collecting dust there for 2 years and until now nobody's bothered?

Upvoted since the blog post is a pretty factual examination of the search warrant and lacks conjecture and hyperbole about what it might all mean.