Trailers show us new stuff.

[Darkurai]

IGNORE THIS, I DIDN'T KNOW THERE WAS ALREADY A THREAD. I DO NOW, SO YOU DON'T NEED TO TELL ME.
I'm not listing any attacks revealed, definite SE-only stages, or SE teams.

Confirmed things:
Sonic the Hedgehog (obviously): 00:04 in "Sonic the Hedgehog joins the Brawl"
Mario's FLUDD is equipped, not used, by down-b: 00:25 in "Sonic the Hedgehog joins the Brawl"
Warp Star: 00:35 in "Sonic the Hedgehog joins the Brawl"
Sonic's inclusion in the Subspace Emissary: 00:39 in "Sonic the Hedgehog joins the Brawl"
That god-awful 4Kids voice actor: 00:07 in "Sonic the Hedgehog joins the Brawl"
The Smash Ball moves: 00:08 in the Fall Press Conference Trailer
Magnification: 00:10 in the Fall Press Conference Trailer
Kyogre: 00:14 in the Fall Press Conference Trailer
Torchic: 00:15 in the Fall Press Conference Trailer
Snorlax: 00:17 in the Fall Press Conference Trailer
Resetti wants us to shut up: 00:20 in the Fall Press Conference Trailer
Some stickers: 00:21 in the Fall Press Conference Trailer
Some trophies: 00:23 in the Fall Press Conference Trailer
Petey Pirahna is a "background" boss: 00:36 in the Fall Press Conference Trailer
Unknown stages (possibly Subspace Emissary stages, but no guarantees): 00:15 and 00:50 through 00:52 in the Fall Press Conference Trailer
Navi: 00:55 in the Fall Press Conference Trailer



Possible things:
Sonic's personal entrance: 00:12 in "Sonic the Hedgehog joins the Brawl"
Sonic's Final Smash: 00:44 in "Sonic the Hedgehog joins the Brawl"
Pit's personal entrance: 00:58 in the Fall Press Conference Trailer

 

[raphtmarqui]

Nice overview.
You should do confirmed attacks too.

 

[Jammer]

Very nice, but it can of course be greatly added to. Also, would you mind separating the confirmed things into "Sonic joins the Brawl" and "Fall Press Trailer" instead of the way you're doing it now? It's a little messy right now.

Cheers