I found out this on a "leak" site. I do not know if it's real or not, bit I hope it is.
"The first trailer began with the Smash Brothers logo as usual, and it was a cinematic set on a mountain with what I assume is King Dedede’s castle. It quickly faded out into a scene of Kirby running inside it, with Mario and a few others like Ness and Link.
King Dedede was then seen hitting some sort of button with his hammer followed by Kirby falling into a trap while the others are fighting his Waddle Dee army.
Kirby is locked into a ring with King Dedede, he dodges his attacks, and easily beats him. He is about to finish him off when a spear flies onto the ring and hits Kirby. A silhoutte is from the back with King Dedede looking back with a silly face and surprise, as Waddle Dee (with a Blue Bandana) gets onto the ring. He makes an odd pose with a spear the tagline “Bandana Dee Waddles into Battle!” shows up, then it cuts to gameplay.
The music during this part was the Cookie Country theme. He appears on a large stage who appears to be Cookie Country as a stage. A lot of his moves are based around his spear. He has one where he twirls it above his head to fly, and overall, he throws it around quite a lot. Another clip in the gameplay footage showed him next to the other Kirby characters, and one with him next to Knuckle Joe fighting.
The final gameplay clip had what I assume is his Final Smash where he summons an horde of Waddle Dees which damage every fighter in the screen.
After the Smash logo appears, it fades out, then back in again to show what appears to be Magolor, a character which is from the same game as Bandana Dee's. "Smash Bros., uh? This should be interesting..."
And the trailer ends."
So, what do you guy think? Real? I hope so. Fake? And what about Magolor? Is there going to be another leak?