No it's not. No professional would care about arbitrary promotional release schedules for a trailer being slightly broken. That shit is just part of the money-making plan, why should it determine when a journalist covers footage that is out there.
Lol. This is a huge fan event and the director is having a panel on his own movie, that he's fought for the past 3 years to have released properly. This is for the fans and it's completely free to attend.