About a month ago Comcast doubled the speed of my connection for free (50/10 -> 105/20). I was delighted as I assumed it meant that a competitor was rolling out fiber in the area or something, and I was very disappointed when an hour scouring the internet for announcements revealed nothing. Somehow I don't think that was the intended reaction.

Then again, Comcast tries to get me to "upgrade" to packages costing half as much as my current one on a regular basis, so who knows what they were going for.