Guys come on...theres not gonna be new gameplay. Its a 30 minute show thats going to show a 4 or 5 minute interview with Todd, where he is going to say the same things he told G4 and IGN.
Not necessarily.
Will we see gameplay? I'm pretty sure it was confirmed by Pete Hines on twitter that we wouldn't be getting anything in this wave of news. Even if it's not it would be very unlikely.
New info/concept art/screens? Why not? Skyrim's recent nipslip suggests that BGS was getting ready to upload those pictures, and just accidentally uploaded them early. Could those images be related to GTTV's Skyrim presentation? We'll find out soon enough.