The apt.postgresql.org repository is now keeping up to 3 versions of
each package so users have more time to decide when they want to
upgrade. Packages are still copied to apt-archive.postgresql.org
before even being removed from the main archive, so versions can be
fetched from either.
It's already been changed a while ago, but announcing at that time
didn't make much sense (when there was still only one version of
everything), and I wanted to test the setup more before committing to
it.
Enjoy,
Christoph
