For anyone that has Comcast, have you been getting the on-screen messages to upgrade your digital cable box by a certain date? And if you didn't did anything happen, i.e., lose channels?
Cox did a similar thing in Omaha not too long ago. I had just been plugged in directly from the coaxial in the wall to my TV. They phased out analog and went to all digital, which required a small cable box for someone in my position. I assume it's something similar.