I wonder if that applies to business accounts, or residential only.
I'm on a heavily fluffed 15/5 biz connection (my 2 year contract ended a long time ago, on month-to-month now). I would jump on 50/25 if it was really and truly only $10 more than I'm currently paying.
I hesitate to call VZ, because I don't want to rock the boat. Once upon a time, I called (another company) about a (non-VZ) service I'd had for years and was happy with. Rep looked at my account, noticed I was over-provisioned for the tier I was paying, and had my service level "corrected".
Learned my lesson on that one, never to rock the boat if you have a good thing going.