---
prelude: >
  - Add ``ploop`` to the list of supported disk formats.
features:
  - The identifier ``ploop`` has been added to the list of
    supported disk formats in Glance. The respective
    configuration option has been updated and the default
    list shows ``ploop`` as a supported format.
upgrade:
  - The ``disk_format`` config option enables ``ploop`` as
    supported by default.