"flogging good ol 14nm for all it's worth"...
It's going to be fine for chipsets for the next few years, of course. If Intel decided to do a sort of "half Rocket Lake" part for low end products, they could probably get good mileage out of it in a late 11th gen i3/Celeron/Pentium stack, and even push a mild update into 12th gen for Celeron and Pentium. That's enough for a couple of years worth of product at least.
There is talk about the small 6+0 Alder Lake die being cancelled and replaced by Rocket Lake. Which would be i3 and below. Depending on the core count, they could maybe do the lower end i5 too. This would be on LGA 1700 presumably.