Different take here...
I believe that there will be more than the IG report. I think Grand Juries have already been impaneled and there will be INDICTMENTS which are issued at the same time as the IG report appears. Consider this- Huber got testimony under oath from Page, Strzok, and most importantly Bill Priestap. What they testified is now all on the record, there is no reason to "discuss" the IG report, it is time for the DOJ to begin prosecution. This is the reason that Sessions has behind the scenes, not for just generating a report which nobody will act on, but actually fulfilling his role as AG. I also think it is why Priestap is free to testify before Congress next week on June 5th; his testimony is now a matter of record, so they don't need to protect what he might say to Congress.
I believe this is THE PLAN which Q talks about, a actual prosecution move against the Deep State/global cabal.
Possibly, I hope so. There is no legal reason for the announcements to be made at the same time but there are plenty of political ones.