That's not an accurate description.
You've been shown some 15 minutes worth of gameplay footage, showcasing combat, important locations and main quest storyline tidbits. You will be getting a 30 minute chunk in just 15 days, plus a video with devs answering direct questions from the community, plus whatever comes out - and I'm sure it'll be juicy and plenty - of Kinley's colossal Q&A.
How in the world can TW3 be described as a game «the common folk should see and know as little as possible of»?
We will see, I hope that the 30 minutes trailer actually gets released and that there will be something at GC too but I would not be suprised if it was just another 2 a 3 minute clip honestly. The same goes for the interview, there may be many answers consisting of we can not answer that yet. Granted, I may just be me becoming cynical because of the constant silence and gigantic difference between press and fan coverage.
Mind you, I am not saying we deserve more, we deserve nothing but it often feels like the table scraps are what is made ready for non press.