I noticed over at reddit there was a big fuss over what was initially thought to be a trailer for the game but is actually (or so I'm led to believe) the opening cinematic to the game - as in the first thing you see when you click on 'campaign'.

I was gonna post it in the Halo 4 official thread but I went back a few pages and all the guys there wanted things keeping spoiler-free, so I thought it was worth making a new thread, appropriately marked so all of them could avoid it if they wanted!  Anyway, without further ado:

http://minus.com/lG2SvytaHHbsL

Not sure how long it will keep up since it's a mirror of a youtube video which has long since been taken down, but enjoy while it lasts!

Don't go to 4chan there's a lot of spoilers there.

The whole thing is leaked, there's endings on youtube :x

Really? O_o.

Well regardless, I'll leave the link up for the time being because it's bloody beautiful!

Well, that's some interesting footage indeed. Could very well be the opening scene.

Seeing Halsey kind of makes me wonder if Jun will make a return somewhere in the campaign mode. That would be awesome.

Yah, it's up on torrent sites now (apparently). Shitty deal for the devs. 

Here's the ending (SPOILERS FOR HALO 4, IDIOTS!)http://www.youtube.com/watch?v=2W9UmAedzj8