[jeff-davis]

Postgres has released a new major version each year for a long time.

The only change is that versions used to be X.Y.Z, and now it just used X.Y. Now, X gets incremented for every major version, so it seems like it's moving faster.

[jsmith99]

The difference is that in place upgrades aren't possible for major versions.

[jeff-davis]

pg_upgrade is the way to do in-place upgrade between major versions:

https://www.postgresql.org/docs/current/pgupgrade.html