rob stone <floriparob(at)gmail(dot)com> writes:
> So, could somebody tell me if the 9.6beta1 version of initdb contained
> an incorrect version constant?
It did, see
https://git.postgresql.org/gitweb/?p=postgresql.git&a=commitdiff&h=99dd8b05aa5647a59f30ca67e67e2e3377f50094
You would have had to do an initdb or pg_upgrade for the new version
anyway because of other catalog changes.
regards, tom lane