I have received your email asking to upgrade my router. I want to know what the new router will do security-wise as well and performance-wise. The only thing you talk about in the email is better wi-fi. Is that all? Are you patching security vulterabilities? If so, which ones?
Comcast typically upgrades equipment that will soon be obsolete. The benefits are more stability, better ability to handle faster speed tiers and considerably better Wi-Fi capabilities. It's not related to security vulnerabilities.
I upgraded mine in December and sent it back and kept the old one. New router was sooo slow.I reconnected them both to check out the newer one and it Is way slower than the old. Took it back to the store and they asked why and I said it was slower and they didn't question me. Just a heads up about this.