Well, a user called Autumn Thread attended the Live Premiere today, and posted some details about the new trailers.
FINAL FANTASY agito XIII
Sorry, I forgot about this.
Was a blend of the old in game footage with a new FMV with narration telling of the war in the world. It's all monotone and shows countries being bombed on the map.
Had a very 'nazi' feel to it. The names of the countries bombing the Japanese-like named countries are very European like. It shows the 'school' being attacked and a crystal is destroyed.
Skips to in-game footage we've seen before at JF and TGS07 of the Card-kun throwing his cards and summoning monsters (odin?).
Moves to FMV again and shows the students of the school posing on a stone surrounded by enemies, card-kun flicks through his cards, he selects a card and throws it out (looks awesome btw) and then the moment his card gets this magical effect, all the students draw arms. Trailer ends. "This is their duty" was said, if I recall correctly (don't hold me to that, wasn't paying attention)
FINAL FANTASY XIII
Started off with the familiar TGS07 footage of the dragon-like flying creature swooping down over a stream, camera moves up to Sera (formerly Nom-chan). Camera pans and shows the world in the distance.
Changes to the airship we've seen previously. This thing is huge and small airships that resemble fish (green beams the top and bottom that are shaped like the spine in fins). The mother airship sends out green circle markers in which the airships fly through, into a docking station and slowly move to the end of the dock which takes them below.
Camera changes to another airship, this is all new footage and a new location.
out of the airship a man? with a pony tail walks out, seems to be some kind of general or a leader of some organisation. We see some soldiers that we've seen in the in-game screen shots released recently, they look a bit like the Helghast from Killzone but a little more organised and scary. They're carrying a casket towards the airship with the general, looks like a black cocoon but at the end is Sera. She has a very royal-esque outfit (I feel that she may be related to royalty or something, I'll elaborate below.) She's walking with them and looks kind of melancholy. At the foot of the unit carrying the casket is the woman with the large breasts, glasses and knee-length hair.
Changes scene to a new location we seen in pictures long ago. There's a large creature or statue in the midst of a green-ish underground location. The special soldiers are surrounding the creature and the city in the background is burning, smoke is coming out of the buildings. The soldiers fire pipes or some other thing into the creature and soon after there's a thousand odd 'pipes' impaled in this thing.
Change scene: We see a beach like location, airships and carriers fly overhead, the camera is in a birds eye position and one of the airships drops 2 objects. As they fall they explode into smaller creatures(?). Camera moves to ground level and there are the clone wars lookalike soldiers running out of the small army barracks like place they have there. 2 futuristic ground vehicles arrive and the camera once again shifts to old footage.
Shortly we hear Lightnings voice. It's not a cutscene but quite a few scenes flashing in out, we see Lightning walking through the ruins with Sera and then again at the frozen location. They're being assaulted by the special soldiers.
We see some fancy combat and sword transformation from Lightning and she flips back to defend. We see Mr.33CM talk with lipsync here and the trailer ends.
Dialogue: (not 100%)
Lightning: 'Carry out the mission' is what you said. You want to abandon it? What about 'your' mission?
Mr. 33cm: That's not it! I'll protect Sera and carry out the mission. That's a promise.
Lightning: Show me you can 'protect'.
FINAL FANTASY versus XIII
yikes I'm getting tired!
Trailer opens with the car scene in the tunnel and radio talking about the end of a cold war. Seems a little bit extended, shows some road signs with names "En Victis" and "Nhilifium" or something like that.
Car exits a tunnel and we see airships looming over in the distance.
Shakespeare message appears and we cut to new in-game footage.
Camera shows a staircase, we see the princes feet climbing the staircase. Detailed shoes. I want some. Camera moves up and shows the prince in his glory, he looks a bit antisocial. He notices Stella looking at the painting of the Goddess and she notices he's around.
She asks him if he seen something earlier, she also seen it she states. She questions him if that is the 'light'. She approaches him quite quickly and he seems a little timid, he turns his back and moves to walk away muttering "It's better not to talk about that", she catches up and does the cute Japanese 'one foot hands behind back spin' motion and questions him if 'that' (dialogue below) is not indeed the words of the (scholars?) at a place called Tenebuira. He tells Stella it's probably the same 'here', also.
By the way, the animation and detail to expression is very impressive. I find that FFvXIII seems to have a little graphical edge over XIII right now. It's truly amazing, I want to see it once more.
After a little more chatter they Noct slumps down onto a chair and we see more of the room while they talk about this 'power' from 'light'. There's a aquarium in the centre of the room.
Noct excuses himself that he must be leaving soon and the two depart after Stella introduces herself and invites him to her 'city/country' 'Tenebuira'. Noct tells her he'll consider it and she leaves rather quickly.
Noct looks up and a voice asks him "Who... are you?"
He mutters back "That's my line" and shrugs it off, walking away.
The rest of the footage was old FMV stuff from TGS07 and Jump Festa.
Dialogue: (not 100% either)
様 is used after Noctis, I'm using lord because I don't know of a better way to translate it.
I'm also throwing in some shit here to make it sound normal. Direct translation is going to sound strange.
Stella: (Lord) Noctis can see the light also, right? I also can see it.
Some time ago, down stairs, ..that thing we saw, that was the 'light' wasn't it?
Stella: It's said in Tenebuira that when the Goddess Etro opens the gate connected between the deceased country light is seldomly seen, however, if seen the said person will be awarded some kind of 'power'
Noctis: That's the same deal here, it seems.
Stella: (Lord) Noctis was gifted with the said 'power'?
Noctis: It's rather better not to talk about those things. It's different from person to person but one way or another it will bring about trouble.
(Noct walks away a bit and slumps onto a chair)
Stella: That 'light', what do you think it really is?
Noctis: It's always 'there' am I not right?
Noctis: Hm..., (suggesting he doesn't know who she is right now)
Stella: I'm Stella.
Noctis: Ah, Stella.., I'll have to be leaving soon.
Stella: I'm sorry for holding you up, Lord Noctis.
Noctis: Just 'Noct' is fine.
Stella: I'll also be leaving. Today I feel that I also received that so called 'power'.
I was able to talk to you.
If it's good for you, next time please come to Tenebuira. I'll show you around.
Noct: That seems good.. I'll give it some thought.
(Stella leaves)
Noct raises his head towards a sound coming.
"Who... are you?"
Noct: That's my line.
Source:
http:www.neogaf.com/forum/showthread.php?t=338607
TGS: New FFXIII and Versus XIII Trailers Detailed
,Blah blah blah.
I think it was at this event
But it's proberly for the hype, so people keep the interest, even though it backfires some times 
