Been having metering issues with my 100G Warpspeed cable plan, so have simply changed to the unlimited plan instead.  

Sales rep said I would probably need a new modem and would schedule a visit in for the upgrade, but my current modem is a Cisco DPC3008.  It's been a few years since it was installed, but I thought that was the model that was still being used, so is there any need for a site visit/upgrade?

I know that with the modem install I officially agree to a new 12 month contract, which I don't really have a problem with, but if there's no reason to coordinate arranging with a tech to swap a modem for the same model, I might as well avoid it.