news: pg12beta4 upgrade steps

On Thu, Sep 12, 2019 at 11:39:42PM -0400, Jonathan S. Katz wrote:
> On 9/12/19 10:57 PM, Justin Pryzby wrote:
> > https://www.postgresql.org/about/news/1972/
> > => PostgreSQL 12 Beta Release Notes
> > https://www.postgresql.org/docs/devel/release-12.html
> > => 404
>
> That's on me with the website display. I did s/devel/12/ and it's now fixed.

Thanks.

I wonder about this part?
https://www.postgresql.org/about/news/1972/
|To upgrade to PostgreSQL 12 Beta 4 from Beta 3 or an earlier version of PostgreSQL 12, you will need to use a strategy similar to upgrading between major versions of PostgreSQL (e.g. pg_upgrade or pg_dump / pg_restore).

I was happy to find that beta3 and 4 have same catalog, but that text seems to
be technically wrong.

$ git log REL_12_BETA3..REL_12_BETA4 src/include/catalog/catversion.h

Justin