About a month ago, Gregg talked during an interview, about a release involving proof of foreign interference in the election. It was aimed at mid August, but since then. He talked about not letting your enemies know when, to make them fire their ammunition early. So, I don’t think he wants to announce a firm date. The other thing he said was it involved input from federal/military intelligence(?) so they would be more in control of the timing is my guess. All that said, I trust this guy. His work on 2000 Mules and Arizona and his contact with Trump all add to my trust.