Elastic Cloud on Kubernetes version 2.16.0

The initContainer for Kibana was renamed from elastic-internal-init-config to elastic-internal-init which could cause issues when a user has overridden the podtemplate.spec.initContainers with custom values. The recommendation is to exclude the Kibana resource from reconciliation temporarily during upgrade of ECK and adjust the Kibana manifest to match the new initContainer name. After the ECK upgrade is complete remove the managed annotation from the Kibana manifest. #8426

Make Helm chart consistent in respect to handling of spec. (eck-fleet-server) #8285
Make Helm chart consistent in respect to handling of spec. (eck-beats) #8248
Make Helm chart consistent in respect to handling of spec. (eck-agent) #8246
Make Helm chart consistent in respect to handling of spec. (eck-kibana) #8192
Set default hardened security context for Kibana. #8086 (issue: #7787)
Add a setting in the Helm chart to deploy FIPS compliant ECK image. #8272 (issue: #8204)
Remove kube-rbac-proxy and adjust default approach to securing the metrics endpoint. #8302 (issue: #8279)

Optimization of the quickstart sections. #8128
Optimization of overview and support help. #8130
Remove node.remote_cluster_client from examples. #8274
Update the guidance for the stack config policy/role mapping issue. #8247
Update stack monitoring documentation. #8198
Document remote clusters using API keys. #8181 (issue: #8167)
Add Kibana to the Enterprise search sample. #8166 (issue: #5090)
Add explanation line for es ingress 9300 port. #8164 (issue: #7833)
Clarify high availability recommendations in Elasticsearch orchestration docs. #8151
Add note on how to access generated Kibana encryption keys. #8150 (issue: #8129)
Move Troubleshooting section to top level of table of contents. #8145 (issue: #8131)
Add is_managed: true to Agent policies. #8125 (issue: #7290)
Adds a secure settings link to K8s docs and note the need to be base64 encoded. #8113

Enterprise Search transition to Elasticsearch #8323 (issue: #8308)
fix(deps): update module golang.org/x/crypto to v0.29.0 #8240
chore(deps): update registry.access.redhat.com/ubi9/ubi-minimal docker tag to v9.5-1731604394 #8237
chore(deps): update go to v1.23.3 #8190
fix(deps): update module github.com/prometheus/common to v0.60.1 #8178
fix(deps): update k8s versions #8163
chore(deps): update wolfi (versioned) #8162
fix(deps): update module github.com/prometheus/client_golang to v1.20.5 #8133
fix(deps): Bump golang.org/x/crypto from 0.29.0 to 0.31.0 #8341