The Mueller report should be published in its entirety, nothing redacted. The American people need to know what went on with the 2016 election.
As for Trump knowing about forthcoming Wikileaks stuff, of course he did, and he lied to Mueller. He publicly stated that more stuff will be coming, that he'll have some "big announcement" in a few days. Then there was no announcement, I presume because there was nothing damaging in the Clinton emails.
Trump lies all the time, about everything. Recently there was news that he'd lied about Doral being under consideration for the G7 summit and that it had been vetted, when in fact he'd added it at the last minute and it had not been vetted. I have no doubts whatsoever that he lied to the Mueller team.