WARNING: Version 5.5 of the Elastic Stack has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
This section summarizes the changes in each release for all of the X-Pack components: X-Pack security, X-Pack monitoring, Watcher, X-Pack reporting, X-Pack machine learning, and X-Pack graph.
As a general rule, we strive to keep backwards compatibility between minor versions (for example, 5.x to 5.y), but there might be breaking changes between major versions (for example, 5.x to 6.y). Breaking changes are listed at the top of the release notes for each version.