Holy -blam!-, this must be super top-secret. I bet there isn't a single youtube video on it.
On a non-sarcastic side:
Are you frikin retarded? All that is is the legendary ending (or "hidden" ending, considering that in halo 2 you didn't need to play on legendary to see it), and this does not hint to a Halo 4 at all. There will not be a Halo 4 for this reason:
1.Halo 3 was the end of a TRILOGY. There will not be any more numbered Halo titles.
If they ever make another game about MC, then it will not be called Halo 4. It will be called something else. What that is, I dont know, but it won't be halo 4.
I just cant belive that you would be stupid enough to make this thread. Are you new to Halo or something? Grow some brains before you come on here next time.
/rant
[Edited on 07.02.2009 11:49 AM PDT]