Well, DKΣ3713 is hapenning now and news are coming.

Dissidia will be released on December of 2008.

Script of the new trailer showed at the event:

Here is the translation of the transcript posted at FF&KH Onlifo. I did as best as I could with it (Tidus and Jecht talk oddly to me) and it does have me excited. Lines clustered together are from the same scene.

The heroes stand on a cliff

Cloud of Darkness: I waited after awakening to make all despair.
Onion Knight: I won't let you erase anything.
Onion Knight: I discovered the power to protect everyone!

Tidus: So that was the reason you and the others joined.
Tidus: And this, is mine....!
Squall: Leave that behind.

Cloud of Darkness: Why can't I destroy it?
Cloud of Darkness: It's just a fragile living thing.
Kefka: Play carefully now.
Kefka: She is an important friend of mine.

Sephiroth: I'll work to see you despair.
Sephiroth: Because you are... a puppet.

Warrior of Light: When fighting against true despair, you'll know the answer.

Kuja: I'm addicted to scheming?
Kuja: When you know nothing, there is nothing to scorn!
(Idiom equivalent to "Ignorance is bliss"?)

Garland: Battle is an endless cycle!

Jecht: You showed up.
Tidus: You're being deceived!
Tidus: If you can cross over, then come tomorrow!
Jecht: So stubborn. Who do you get that from?
Tidus: It's decided then!

Cloud of Darkness: The time has come, everything is ripe. The final struggle to the death.
Emperor: If there is a perfect (blank) to possess, it is all up to the whims of the gods.
(Yui-san forgot one of the words which is why there is a blank)

The Warriors of Chaos gather around the magma...
Sources:

Dissidia To Be Released December 2008 - Square Union#

and

Dissidia