Most likely they'll just switch to picometers, then femtometers, etc, each one yielding 10 generations or so
In a silicon crystal, the minimum distance between atoms is 0.235nm. So, no.
In marketing, anything is possible
Yeah we’ve already entered marketing land when it comes to this years ago.
I think the most realistic guess would probably be a switch to some different nomenclature like G1, G2, G3 etc for generations or literally anything else like product lines (see what happened to nvidias/amds graphics card numbering, etc)