The site gives a spoiler-filled description of the new footage being presented to attendees of the trade show.
The scene begins with MJ and Peter laying on a web in the park talking -- you'll know about this scene if you've paid attention to the trailer and seen previously released production stills. We surmise that she's just been in a performance that he attended as she says something like, "I wish you could come see me every time."
We then shift to a scene where Peter is visiting Aunt May and he tells her he's decided to marry Mary Jane. "That's so wonderful," she says, and she gives Peter her engagement ring to offer MJ.
CUT TO: Peter is walking in the city, in normal street clothes, and Harry Osborn swoops in out of nowhere sporting a Hobgoblin-like look. He is fully dressed in black, with tough-looking Oscorp body armor. He has knives that pop out from his arms, and he wears a black mask -- it reminds us of Scorpion's mask from Mortal Kombat, but is mostly black. He is riding what looks like a badass version of a Back to the Future hoverboard which flies much like the Green Goblin's rocket sled.
Peter and Harry fly through the city fighting in what is probably the most brutal battle seen in the Spidey flick series thus far. As Peter swings from building to building, Harry flies along with him and they exchange powerful blows. Harry slashes Peter's chest. Peter fires balls of webbing at Harry and manages to obscure his vision, but this doesn't slow him down for long. Harry flies after him, knocking him off of every perch, while Peter continues to fire webs -- remember he's not even dressed as Spider-Man at this point.
In the scene's climax, Harry chases Peter into a narrow alley and hurls flying pumpkin-shaped razor weapons at him. Peter knocks them out of the air, and manages to send one flying back towards Harry. This knocks him off of his board and sends him falling to the ground, hitting a number of things on the way down. The scene ends with Harry laying on the ground unconscious and Peter swinging down to try and help him... but things don't look good for the young Mr. Osborn.