I can only confirm that. The file
https://download.ceph.com/debian-pacific/pool/main/c/ceph/python3-rados_16.…
is clearly missing on the ceph download server which makes it impossible to install the
upgrade on Debian. And as the previous 16.2.10 Package definition has been replaced with
the latest one, this currently makes it impossible to install Pacific on a Debian system.