Let's see if he actually releases the "full report", or if he redacts a lot to protect the "personal privacy" and "reputational interests" (his words in his recent letter to congress) of Team Trump in what he releases. I would be pleasantly shocked if he actually comes through on transparency.
And we already know a lot of bad things when it comes to Trump, things that were bad enough that Trump tried to obscure and lie about when it comes to business and campaign interactions with the Russians, let alone on the obstruction front where his lawyers wouldn't dare let him be interviewed out of fear that he would perjure himself ("guess" as Dowd said publicly, Trump's "a fucking lawyer" as Dowd said privately) and where Trump was praising and encouraging Manafort and Stone to stay silent while not saying that he would rule out a pardon, and he pardoned Scooter Libby along the way to show that people who don't rat get pardons. If a Dem did 10% of that right wingers would be losing their minds.