The good news is, you don't have to change your plan if you don't want to. Hopefully people will remember this and not allow their plans to be changed without first looking into whether or not it will benefit them.
This is true. I'm contemplating a switch because I think my current 3 GB plan is too much for me most of the time, but 1 GB might be cutting it close. If I bump down to the new 2 GB plan, I'd save some money, would have some buffer, and even potentially rollover what I don't use.