Despite 36+ years as a programmer at more or less every level of computing, I don't know that much about CPU sockets. However, my impression is that we'd not be particularly limited by a requirement that a given physical CPU socket design (size, pinouts, power supply) was used for 10 years. As a self-builder, and thus periodic (re)purchaser of motherboards and cpus, my sense is that the majority of the changes to CPU socket specs are gratuitous and unnecessary.

I could be wrong.