Didn't see this posted but...

[Mr Macro]

There was a update released for Gears of War the other day.Including a new game type called Annex.Some changes to assasination, some tweaks to the game and some major glitch fixes.

[Minstrels]

Dont think its been posted so nice find. They havent patched all the glitches though as you can still glitch in War Machine, Tyro Station and the Fuel Depo.
The new Annex game owns aswell.

[Azul]

Ye, it's good fun if you have a decent team. You can't get weapon or the Seriously... achievement in Annex. Ahaha.

[Mr Macro]

Yeah, buy you already have them