Microsoft is saying that three of the US' big four carriers -- AT&T, Sprint, and Verizon, to be specific -- will be hitting the ground running with Windows Mobile 6.5 as part of its synchronized global launch on October 6. We've got to give Microsoft some credit on this one: launching a single device around the world on the same day is a feat in itself, but coordinating with countless manufacturers and carriers to get them to launch a bunch of different devices on the same day takes things to an entirely different level. Unfortunately, that's about all we know; hardware hasn't been unveiled, thou