Cut v1.20.10-up.1 Release on 2026-06-23

[lsviben]

This issue can be closed when we have completed the following steps (in order).
Please ensure all artifacts (PRs, workflow runs, Tweets, etc) are linked from
this issue for posterity. Assuming v1.20.10-up.1 is being cut, after upstream
crossplane/crossplane v1.20.10 has been released
according to the declared schedule, you should have:

• Synced the release-1.20 release branch in upbound/crossplane, with upstream crossplane/crossplane release branch, up to the v1.20.10 tag, adding any required change specific to the fork, see here for more details.
• Tagged upbound/crossplane v1.20.10-up.1 from the release-1.20 branch by:
  • Running the Tag workflow on the release-1.20 branch with the proper release version, v1.20.10-up.1. Use Release v1.20.10-up.1 as message (FYI: the format suggested is only for consistency, there is no actual dependency on it).
  • Running the CI workflow on the release-1.20 branch to build and publish the latest tagged artifacts.
  • Create a new release for v1.20.10-up.1 with autogenerated notes and any additional note needed.
  • Confirm the image has been successfully published using: docker buildx imagetools inspect docker.io/upbound/crossplane:v1.20.10-up.1
• Created and merged a PR for upbound/uxp to either the main branch, if cutting a patch for the latest supported release, taking care to label it backport release-1.20, or directly to the release-1.20 branch, if cutting a patch for an older supported release. With the following changes:
  • Update any reference to the old latest release to v1.20.10-up.1, such as CROSSPLANE_TAG and CROSSPLANE_COMMIT in the Makefile.
  • Update the dependencies in cluster/charts/crossplane/Chart.yaml to reference the latest versions available and supported:
    • uxp-webui
    • uxp-apollo
  • Run make generate to import any changes in the upstream Helm chart.
• Cut UXP v1.20.10-up.1 release from the release-1.20 branch by:
  • Running the Tag workflow on the release-1.20 branch with the proper release version, v1.20.10-up.1. Use Release v1.20.10-up.1 as message (FYI: the format suggested is only for consistency, there is no actual dependency on it).
  • Running the CI workflow on the release-1.20 branch to build and publish the latest tagged artifacts.
  • Verify that the tagged build version exists on the releases.upbound.io build channel, e.g. build/release-1.20/v1.20.10-up.1/...
• Verify the produced helm chart available in the build channnel at build/release-1.20/v1.20.10-up.1/charts by doing some sanity checks:
  • Installs on a cluster properly with helm -n crossplane-system upgrade --install crossplane <path-to-chart.tgz> --create-namespace.
  • Uses the correct image versions of upbound/crossplane, e.g. kubectl -n upbound-system get pods -o yaml | grep image:
  • Verify at least one of the above reference platforms works end to end by configuring and creating a claim, e.g. using https://github.com/upbound/platform-ref-gcp/blob/main/examples/cluster-claim.yaml:
    • https://marketplace.upbound.io/configurations/upbound/platform-ref-aws
    • https://marketplace.upbound.io/configurations/upbound/platform-ref-azure
    • https://marketplace.upbound.io/configurations/upbound/platform-ref-gcp
  • Upgrading from the latest supported version works, for example run:
    • create a kind cluster: kind create cluster
    • install the current stable version: up uxp install
    • install one of the above reference platforms
    • upgrade to this new version as above: helm -n crossplane-system upgrade --install crossplane <path-to-chart.tgz> --create-namespace
• Run the Promote workflow from the release-1.20 branch, to promote v1.20.10-up.1 to stable, here you should find upbound-crossplane-1.20.10-up.1.tgz. Verify everything is correctly working by running up uxp install against an empty Kubernetes cluster, e.g. kind create cluster, which should result in an healthy UXP installation with expected image versions.
• Drafted, validated with the rest of the team and then published well authored release notes for UXP v1.20.10-up.1. See the previous release for an example, these should at least:
  • enumerate relevant updates that were merged in u/xp and u/uxp.
  • mention the xp/xp version it refers to.
  • list new contributors to u/uxp.
  • have the links to the full changelog of u/xp and u/uxp.
• Opened a PR against upbound/docs with the following changes (see upbound/docs#1112 for reference):
  • Added a release-notes entry in docs/reference/release-notes/uxp.md matching the format of previous entries, stripping links to private repos.
  • Only if this patch is cutting the new latest UXP release (patch on the latest supported minor): Refreshed docs/reference/uxp-helm-reference.md by fully replacing the existing values table with a freshly-generated merged table for v1.20.10-up.1: the main UXP chart values merged with each dependency subchart's values at the version pinned in cluster/charts/crossplane/Chart.yaml (e.g., uxp-webui under webui.*, uxp-apollo under apollo.* — use the alias from Chart.yaml, not the chart name). Skip this item for patches on older minors — the reference doc only tracks the latest release.
• Ensured that users have been notified of the release on all communitcation channels:
  • Slack: crossposting on Crossplane's Slack workspace channels #announcements, #upbound and #squad-crossplane on Upbound's Slack.
  • Twitter: ask #marketing on Upbound's Slack to do so.

[lsviben]

Release progress — v1.20.10-up.1

Artifacts completed so far (CI still running, image publication not yet confirmed):

• Fork sync (upbound/crossplane release-1.20): https://github.com/upbound/crossplane/pull/290 (merged 2026-06-23)
• Tag workflow: https://github.com/upbound/crossplane/actions/runs/28018109796 (success)
• CI workflow: https://github.com/upbound/crossplane/actions/runs/28018267477 (in progress)
• GitHub release: https://github.com/upbound/crossplane/releases/tag/v1.20.10-up.1

Ticked: fork sync, Tag workflow, CI workflow, create release. The "Confirm the image has been successfully published" box is intentionally left unticked until the CI run finishes.

[lsviben]

Image confirmed. Version bump PR #534 merged. Ready to tag UXP.