There will not be any gameplay videos on the hub. We already know that.
I hope there will be at least one screenshot.
As others have said before in various threads, they'll probably release all the screenshots from the magazine (and hopefully new ones) when the hub is finished as they did with their last cover game, Tomb Raider.
I wanna see what that actual mountain screenshot looks like though. Epic.
EDIT: crap forgot I was in this thread. My bad.