These are changes for the better, mostly. Though I still haven't met anyone who's actually using these new features introduced as stable in Next 14.

Assuming semantic versioning, Next 15 must have breaking changes.

Vercel (Vercelli? Vermicelli?) prefers to launch major versions every 6 months as their prerecorded Vercel Ship even to attract larger and larger rounds of VC investment, though, so semantic versioning is a secondary concern.

I'm expecting the IPO around Next 20.