I'd be amazed if PD get to present GT6 themselves at any length. It'll probably be a Sony guy saying "PS3 is not dead blah blah blah, here is what PD are up to, an exclusive GT6 trailer" etc.
We'll get more info from the show floor the next three days but it was obvious that was all we'd get in the main conference. good though, Willow Springs, GT3 cars and a mountain track?