The announcement was kicked off with a brand new trailer for Nightfall.

Here's the details:

November 8-11

HaloFest: A Celebration Fit for a Spartan
Halo: The Master Chief Collection is Microsoft and 343 Industries’ tribute to longtime fans, the culmination of more than 13 years of storytelling, adventure and gameplay. For the first HaloFest, 343 built a living museum of Halo history, but this time, the history is encapsulated in its purest form, the Master Chief’s epic saga. So this year, in celebration of those memories and the future that lies ahead, Halo will take over the Avalon Theatre in Los Angeles on Nov. 10, the day before Halo: The Master Chief Collection arrives worldwide.

Fans all over the world are invited to join the festivities via a live broadcast on Xbox Live, Xbox.com and Twitch, beginning at 8 p.m. PT. Tune in to the HaloFest Livestream to see:

First look at Halo 5: Guardians.
Fans will have a chance to experience the Halo 5: Guardians Multiplayer Beta before its release on Dec. 29. An exhibition match between eSports pros will provide a first glimpse at the future of Halo multiplayer gameplay.

World premiere of Halo: Nightfall.
The evolution of Halo storytelling continues with the debut of Halo: Nightfall. Watch the first episode of this original live-action digital series, which introduces Agent Locke – a pivotal new character in Halo 5: Guardians. Halo: Nightfall is the result of an unprecedented collaboration with industry talents like Ridley Scott and Sergio Mimica-Gezzan, who worked hand-in-hand with 343 Industries to raise the bar for live-action storytelling in the Halo universe.

Interviews with 343 Industries and more.
Hear from Head of 343 Industries Bonnie Ross, Franchise Development Director Frank O’Connor, Executive Producer Dan Ayoub, Executive Producer Josh Holmes and others as they talk about the past, present and future of the Halo universe. Additionally, get the latest details on Halo: Nightfall directly from 343 Executive Producer Kiki Wolfkill, the cast and production team, and hear from celebrity Halo fans walking the green carpet at the Avalon Theatre.

The global Halo Tournament.
On Nov. 8-9, the Halo: The Master Chief Collection Launch Invitational, presented by ESL, will feature 32 of the biggest names in eSports going toe-to-toe in Halo 2: Anniversary multiplayer for $50,000 in prizes and the chance to be the first to play the Halo 5: Guardians Multiplayer Beta. The competition will take place at ESL’s Southern California headquarters, and all coverage will be streamed at Twitch.tv/Halo on Nov. 8-9, with additional highlights airing during the HaloFest live broadcast on Nov. 10.

Halo: Nightfall Trailer Debuts Today
Can’t wait for HaloFest? Check out the new Halo: Nightfall trailer above for a sneak peek at the live-action series. Led by world class talent, including executive producer Ridley Scott, Scott Free TV President David Zucker, and award-winning director Sergio Mimica-Gezzan, Halo: Nightfall will take full advantage of Xbox One’s rich interactivity, connecting the games and the series in innovative new ways.

The next chapter in your Halo journey begins soon, and you can get ready by pre-ordering and pre-downloading Halo: The Master Chief Collection today. Be sure to tune in, beginning with the tournament on Nov. 8-9, followed by the HaloFest broadcast at 8 p.m. PT on Nov. 10! Enlist today.

When is it?

Nov. 8-11

Interesting. I'm excited for what our first glimpse of Guardians gameplay will look like. And a Colonel that was a spartan. No doubt he will be an interesting character.

Actually, I just did a bit of research and found that there was a SPARTAN-II by the name of Randall-037. He's one of the few truly MIA Spartans.

That connection would be so cool. I'm positive it is. It'd be weird to have two SPARTAN-IIs with the name of Randall.

What's this about a Spartan colonel?

A little disappointed characters are CG, but otherwise it looks solid. Ridley Scott can nail atmosphere.

Huh? Only CG character is the Elite and Impostor Swarm.

Obviously, I'm getting very Promethean vibes here if you know what I mean.

Actually, I'm getting more of a Flood vibe. 343i has consistently dodged questions asking if the Flood are going to be in the film.

The other one was focused on Lasky, who, while the only one, did receive character development.