Release Cycle

Starting with the v1.10.0 release, Crossplane is released on a quarterly (13 week) cadence. A cycle is comprised of three general stages:

• Weeks 1—11: Active Development
• Week 12: Feature Freeze
• Week 13: Code Freeze

This results in four releases per year, with the most recent three releases being maintained at any given time. When a new release is cut, the fourth most recent release reaches end of life (EOL). Users can expect any given release to be maintained for nine months.

Definition of maintenance

The Crossplane community defines maintenance in that relevant bug fixes that are merged to the main development branch will be eligible to be backported to the release branch of any currently maintained version, and patch releases will be cut appropriately. It’s also possible that a fix may be merged directly to the release branch if no longer applicable on the main development branch. Maintenance doesn’t indicate any SLA on response time for user support in the form of Slack messages or issues, but problems will be addressed on a best effort basis by maintainers and contributors for currently maintained releases.

Patch releases

This policy is subject to change in the future.

Patch releases are cut for currently maintained minor versions on an as needed basis. Any critical backported fixes will be included in a patch release as soon as possible after merge.

Pre-releases

This policy is subject to change in the future.

Alpha, Beta, and RC releases are cut for an upcoming release on an as needed basis. As a policy, at least one pre-release will be cut prior to any minor release. Pre-releases won’t be made on release branches.

Provider releases

The Crossplane release cycle isn’t required to be adhered to by any other Crossplane projects, but a similar cadence is encouraged. Maintainers listed in each repository’s OWNERS.md file are responsible for determining and publishing the release cycle for their project.

Release stages

The following stages are the main milestones in a Crossplane release.

Active development

During active development, any code that meets the requisite criteria (such as passing appropriate tests, approved by a maintainer, etc.) will be merged into the main development branch. At present, there is no requirement to formally submit an enhancement proposal prior to the start of the release cycle, but contributors are encouraged to open an issue and gather feedback before starting work on a major implementation (see CONTRIBUTING.md for more information).

Feature freeze

During feature freeze, no new functionality should be merged into the main development branch. Bug fixes, documentation changes, and non critical changes may be made. In the case that a new feature is deemed absolutely necessary for a release, the Crossplane maintainers will weigh the impact of the change and make a decision on whether it should be included.

Code freeze

During code freeze, there should be no changes merged to the main development branch with the following exceptions:

• Fixes to a failing test that’s deemed to be incorrectly testing functionality.
• Documentation only changes. It’s possible that a documentation freeze will be implemented in the future, but it’s not currently enforced.
• Fixes to a critical bug that wasn’t previously identified. Merging a bug fix during code freeze requires application for and approval of an exception by Crossplane maintainers. This process is currently informal, but may be formalized in the future.

Release dates

Crossplane releases once a quarter (every 13 weeks). Typically, the release happens on the Tuesday of the last week of the quarter, as shown on the community calendar. Keep in mind that the specific date is approximate. A lot of factors can alter the date slightly, such as code reviews, testing, and bug fixing to ensure a quality release.