Here's the quote that I'm referring to.
Hopefully GAF doesn't ignore this, and when it comes out we can get some of those GAF TF2 Matches together again. Those were fun. Anyway, throwing new weapons into the mix will definitely get me to sit down and play some TF2 again and grind out the last 150 kills or so I need to get my Hardcore achievement.
EDIT: Oh, also...
Dear Valve,
Release a trailer for the new content, class updates, etc on the Xbox Live Marketplace. It will do wonders for bringing more people back to the game once it releases.