The ending points to another trilogy. Maybe the Master Chief will find the Forerunners.

Halo 4: "Fighting the red ring of Death"

Try to make something negative into something fun.

I've been told from very reliable sources within both Bungie and Microsoft game studios that the next Halo will be an MMO

They are saying that Halo is a IP that is constantly evolving; from a FPS, to a RTS (Halo Wars), to a MMO ala World of Warcraft.  They are following in the footsteps of Blizzard, and in fact have hired on many of the programmers from early WoW development.  This is supposed to be the ultimate cash in for one of the most revered IP's.

It's going to be 2 short missions, then Halo 4 appears on the screen, Master Chief removes his helmet and it's Duke Nukem. Screen fades to black and Duke Nukem Forever appears, the the game really begins.

Halo 4: Who cares, you'll buy it anyway.

NOOBS! Marathon is the sequel to Halo 3:

Many fans of Bungie studios games have found several similarities and continuties with the two games. Some similiarites include the circle-in-circle logo found on the UNSC ship "The Pillar of Autumn" in the Halo series, on 343 Guilty Spark, on the Mjolnir armors that Master Chief (a cybernetically altered human) wears, and the Mjolnir Cyborg in Marathon, and the designation SPNKR on the rocket launchers, and the relation of the name between the assault rifles in Marathon 2 and Halo Combat Evolved, MA-75B(Marathon 2) and the MA5B(Halo: Combat Evolved). But the best piece of evidence is that former Bungie Head Alex Seropian (who has gone on to found Wideload Games) claimed in an interview that the Master Chief and the protagonist from Marathon are different incarnations of the same character. Regardless, Bungie's current stance is that the two series are not related to each other.

There is your proof. There is no Halo 4. Bungie is just messing with people. There is not Halo movie either. It was cancelled. And it would have sucked anyways.

******POSSIBLE SPOILER******
******POSSIBLE SPOILER******
******POSSIBLE SPOILER******


Marathon.

The year is 2794. After being in cryo-stasis for over 200 years, you (a superhuman cybernetic being) land on the Marathon (a spaceship converted from one of Mars' two moons) to fend off the invading Pfhor.

Seriously. What else could it be? I'm a believer.

i find it HI LARRY US that nintendo fan boys are making fun of microsoft for a possible 4th halo... how many marios are there?

Red Halo of Death?

Can I get a source? If not I think you were trolling or joking. With you it could be both.