Today it was announced by the NFL that for the first time since being negotiated in the TV contracts, the flexible schedule issue will be used next month. Previously scheduled Chicago Bears at New York Giants on Sunday afternoon on November 12th (FOX) will now take place on Sunday evening on the same date on NBC.
Also, according to
Yahoo!..."As part of the schedule shuffle, New Orleans' game at Pittsburgh will be moved from a 1 p.m. EST start to 4:15 on Fox."
It's a bit confusing but I think each network protects a certain amount of games late in the year and they can rearrange them to make sure they each get to air some games with playoff implications instead of something like Raiders/Cardinals.