Richard Huxton <dev@archonet.com> writes:
> One thing no-one's mentioned is how we're going to deal with definitive
> incompatibilities.
I don't really think that in-place update changes that story at all.
The advice has always been "read the release notes and test your
applications before updating". The only thing that in-place update
will offer is shorter update downtime than dump/reload.
regards, tom lane