My direct response to your question is: the same as when the NSA released theirs. Like I said in the very post you're responding to, there are arguments both ways, but to pick and choose which argument you're using in a way that always happens to disadvantage one candidate is a scandal itself, and likely a criminal violation of the Hatch act.

And as an aside, it was an update to the effect of "we don't actually know anything new, but we found something that might hold something new." And, as we know now, didn't actually contain anything new. There's a reason they call it the October surprise.