Hillary's been lying about her emails for months. This much we know. At this point, it's impossible to argue that she's been honest or forthright. Democrats will still try to make that claim, but they sound incredibly stupid doing so. When CNN is laughing at your denials, you know you're in trouble.
We also know that they're terrified about the possibility (probability) of further even-more-damning leaks to come. If Julian Assange is to be believed, and we're nowhere near sure that he is, there is a treasure trove of Clinton-related communications that has yet to be unveiled.