Update release notes for 3.0 (elastic#8561)

* Update release notes for 3.0
---------

Co-authored-by: Michael Morello <michael.morello@gmail.com>
Co-authored-by: Peter Brachwitz <peter.brachwitz@gmail.com>

Author: 3 people

docs/release-notes/breaking-changes.md

@@ -16,9 +16,11 @@ Breaking changes can impact your Elastic applications, potentially disrupting no
 
 ## 3.0.0 [elastic-cloud-kubernetes-300-breaking-changes]
 
-::::{dropdown} Title of breaking change
-Description of the breaking change.
-For more information, check [PR #](PR link).
-**Impact**<br> Impact of the breaking change.
-**Action**<br> Steps for mitigating deprecation impact.
+::::{dropdown} Enterprise Search no longer available since version 9.0.0
+The standalone Enterprise Search, App Search and Workplace Search products remain available in maintenance mode and are no longer recommended for new search experiences. We recommend transitioning to our actively developed Elastic Stack tools to build new semantic and AI powered search experiences. There will be no standalone Enterprise Search 9.x image to update to.
+For more information, check [Migrating to 9.x from Enterprise Search 8.x versions](https://www.elastic.co/guide/en/enterprise-search/8.18/upgrading-to-9-x.html).
+
+**Impact**<br> The upgrade to version 9.0.0 is not possible for standalone Enterprise search resources.
+
+**Action**<br> Migrate away from Enterprise Search following [this guide](https://www.elastic.co/guide/en/enterprise-search/8.18/upgrading-to-9-x.html). Only once the standalone Enterprise Search resources have been deleted attempt the upgrade of the Elastic Stack to version 9.0.0.
 ::::

docs/release-notes/deprecations.md

@@ -19,9 +19,4 @@ Review the deprecated functionality for Elastic Cloud on Kubernetes. While depre
 
 ## 3.0.0 [elastic-cloud-kubernetes-300-deprecations]
 
-::::{dropdown} Deprecation title
-Description of the deprecation.
-For more information, check [PR #](PR link).
-**Impact**<br> Impact of deprecation. 
-**Action**<br> Steps for mitigating deprecation impact.
-::::
+There are no deprecations for ECK 3.0

docs/release-notes/index.md

@@ -1,5 +1,5 @@
 ---
-navigation_title: "Elastic Cloud on Kubernetes"
+navigation_title: "Release Notes"
 mapped_pages:
   - https://www.elastic.co/guide/en/cloud-on-k8s/current/release-highlights.html
   - https://www.elastic.co/guide/en/cloud-on-k8s/current/eck-release-notes.html
@@ -18,6 +18,42 @@ Review the changes, fixes, and more in each release of Elastic Cloud on Kubernet
 
 ## 3.0.0 [elastic-cloud-kubernetes-300-release-notes]
 
+### Release Highlights
+- ECK 3.0.0 adds support for Elastic Stack version 9.0.0. Elastic Stack version 9.0.0 is not supported on ECK operators running versions earlier than 3.0.0.
+
 ### Features and enhancements [elastic-cloud-kubernetes-300-features-enhancements]
+- Add support for defining `dnsPolicy` and `dnsConfig` options for the ECK operator StatefulSet [#7999](https://github.com/elastic/cloud-on-k8s/pull/7999)
+- Config: Allow escaping dots in keys via `[unsplit.key]` syntax [#8512](https://github.com/elastic/cloud-on-k8s/pull/8512) (issue: [#8499](https://github.com/elastic/cloud-on-k8s/issues/8499))
+- Enable copying of ECK images to Amazon ECR to make it easier for users to find our own ECK operator in the AWS marketplace [#8427](https://github.com/elastic/cloud-on-k8s/pull/8427)
+- Support new agent image path as of 9.0 [#8518](https://github.com/elastic/cloud-on-k8s/pull/8518)
+- Remove ubi suffix for 9.x images [#8509](https://github.com/elastic/cloud-on-k8s/pull/8509)
+- Remove support for 6.x Stack version [#8507](https://github.com/elastic/cloud-on-k8s/pull/8507)
+- Log resourceVersion on Create and Update [#8503](https://github.com/elastic/cloud-on-k8s/pull/8503)
+- Remove policyID validation [#8449](https://github.com/elastic/cloud-on-k8s/pull/8449) (issue: [#8446](https://github.com/elastic/cloud-on-k8s/issues/8446))
+- Refactor APM server for 9.0.0 [#8448](https://github.com/elastic/cloud-on-k8s/pull/8448) (issue: [#8447](https://github.com/elastic/cloud-on-k8s/issues/8447))
+- Improve error messages and events during Fleet setup [#8350](https://github.com/elastic/cloud-on-k8s/pull/8350)
+- Validate updates to 9.0 go through 8.18 [#8559](https://github.com/elastic/cloud-on-k8s/pull/8559) (issue: [#8557](https://github.com/elastic/cloud-on-k8s/issues/8557))
 
 ### Fixes [elastic-cloud-kubernetes-300-fixes]
+- Correctly parse managed namespaces when specified as an environment variable [#8513](https://github.com/elastic/cloud-on-k8s/pull/8513) (issue: [#7542](https://github.com/elastic/cloud-on-k8s/issues/7542))
+
+### Documentation improvements [elastic-cloud-kubernetes-300-documentation-improvements]
+- Fix unresolved attribute in ECK Quickstart [#8432](https://github.com/elastic/cloud-on-k8s/pull/8432)
+- Add synthetic monitoring example [#8385](https://github.com/elastic/cloud-on-k8s/pull/8385) (issue: [#6294](https://github.com/elastic/cloud-on-k8s/issues/6294))
+- Update heap dump command to use the most recent Java process [#8294](https://github.com/elastic/cloud-on-k8s/pull/8294)
+- Document the need for an ingest node for Enterprise Search analytics [#8271](https://github.com/elastic/cloud-on-k8s/pull/8271)
+
+### Miscellaneous
+- chore(deps): update Docker tag `registry.access.redhat.com/ubi9/ubi-minimal` to `v9.5-1741850109` [#8544](https://github.com/elastic/cloud-on-k8s/pull/8544)
+- Update `golang.org/x/net` package to `0.37.0` [#8521](https://github.com/elastic/cloud-on-k8s/pull/8521)
+- chore(deps): update Docker tag `docker.elastic.co/wolfi/go` to `v1.24` [#8453](https://github.com/elastic/cloud-on-k8s/pull/8453)
+- fix(deps): update module `go.elastic.co/apm/v2/*` to `v2.6.3` [#8440](https://github.com/elastic/cloud-on-k8s/pull/8440)
+- chore(deps): update Wolfi to `v1.23.5-r1` [#8434](https://github.com/elastic/cloud-on-k8s/pull/8434)
+- fix(deps): update k8s [#8400](https://github.com/elastic/cloud-on-k8s/pull/8400)
+- fix(deps): update module `github.com/gkampitakis/go-snaps` to `v0.5.8` [#8393](https://github.com/elastic/cloud-on-k8s/pull/8393)
+- Bump `golang.org/x/crypto` from `0.29.0` to `0.31.0` [#8334](https://github.com/elastic/cloud-on-k8s/pull/8334)
+- fix(deps): update module `github.com/prometheus/common` to `v0.61.0` [#8333](https://github.com/elastic/cloud-on-k8s/pull/8333)
+- fix(deps): update Kubernetes dependencies to `v0.32.0` and controller-runtime to `v0.19.3` [#8330](https://github.com/elastic/cloud-on-k8s/pull/8330)
+- fix(deps): update module `github.com/magiconair/properties` to `v1.8.9` [#8307](https://github.com/elastic/cloud-on-k8s/pull/8307)
+- chore(deps): update Docker tag `docker.elastic.co/wolfi/go` to `v1.23.4` [#8306](https://github.com/elastic/cloud-on-k8s/pull/8306)
+- fix(deps): update module `github.com/stretchr/testify` to `v1.10.0` [#8282](https://github.com/elastic/cloud-on-k8s/pull/8282)

docs/release-notes/known-issues.md

@@ -15,4 +15,8 @@ Known issues are significant defects or limitations that may impact your impleme
 % Workaround 
 % Workaround description.
 
-:::
+:::
+
+## 3.0.0 [elastic-cloud-kubernetes-300-known-issues]
+
+There are currently no known issues for ECK 3.0