It’s called desperation. Trump today called this the biggest scandal since Watergate which is completely asinine. Watch the polls drop a little bit for Clinton but not enough to give trump anything close to a victory.
This is Comey looking out for Comey. He has a reputation of being impartial, and hates it when he is perceived as being biased. The Republican accusations of bias from his July 5 recommendation that Clinton not be charges are still bothering him.
He was afraid these investigative findings would leak, and (although they don’t even know what any of this means yet) it would appear that he was withholding information to favor Clinton. So he throws this vaguely accusatory nothingness out there so as to appear “impartial”.
We’ll have to see what (if anything) Comey says about all of this on Monday. But for thoughtful voters, this currently adds up to absolutely zilch.