The new Doom game was teased at E3 this year with the tagline "Reveal Quakecon 2014" What it didn't mention was that it was going to be revealed to the live attendees of Quakecon and the live attendees
According to a few sites like vg247 and polygon this is the case that is happening now. What a complete slap in the face, to release a teaser to the public and then only show off what was teased to an exclusive party.
I fully anticipate someone is going to record and leak the stuff anyways, but what a stupid move to not show off the game like was seemingly promised. Wolfenstein already had a horrible marketing campaign, this isn't looking much better. The only thing I can see helping me from foaming at the mouth is if the multiplayer beta comes out the same week, and the private footage is of the single player campaign. It'll burn a lot less.