So you know that cool lady who announces everything during Team Fortress 2? Turns out she's also a psycho (not surprisingly) who hates friendship.
A new video loop released yesterday with the latest update has her berating the players about friendship. With all this talk about friendship being perceived as a betrayal to her and the other "employers," we can infer is that a new game mode may be coming along, perhaps allowing the REDs and BLUs to work together. Obviously the idea of players not shooting each other upsets the "mercenaries," which may either be the name of an actual group or just what the "employers" are.
Have a listen and speculate your hearts out.