Comey laid out his case to indict Hillary the first go round but for some reason he thought that a former Marine General, James Cartwright, should face prison time for releasing a single classified document in a book deal while Hillary should be immune from prosecution for misuse of a thousand classified documents. What ever new revelations uncover he still has the option to seek indictment against Hillary. My guess is that Comey faced a revolt in the FBI and whatever he has now is just an excuse to save face (and prosecution when Trump is elected?)