Epic Games has announced that a title update is coming soon as it is going through the certification process. A post in the official Gears of War forums revealed that the update will include a brand new multiplayer gametype:
The next title update for Gears of War is currently going through the certification process. We’ll have more detail about the update next week but I can tell you that in addition to fixing a whole bunch of glitches, and providing 720p for VGA users running at 1280×1024, it will contain a brand new multiplayer gametype called Annex.
Some folks who got to play it a few weeks ago said they think it is our best multiplayer gametype yet but I’ll leave it for you fans to decide what you think for yourself when it shows up soon on Xbox Live. More details next week.
As to what to expect from this new multiplayer game type, its name suggests it could be a territory based game mode.
Epic clarified it will be free.