Update upgrade-policy.md (#19533)

More clarity added that LTS for self-hosted does not apply to Cloud

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Co-authored-by: Mike Lewis <[email protected]>

Author: devarshishah3

src/current/cockroachcloud/upgrade-policy.md

@@ -25,6 +25,12 @@ All CockroachDB {{ site.data.products.basic }} clusters, and CockroachDB {{ site
 
 When a CockroachDB {{ site.data.products.advanced }} cluster is nearing its EOS date, you will be reminded to upgrade the cluster at least 30 days before the EOS date to avoid losing support. {% capture who_can_upgrade %}A user with the Cluster Administrator or Cluster Operator [role]({% link cockroachcloud/authorization.md %}) can [upgrade a cluster]({% link cockroachcloud/upgrade-cockroach-version.md %}) directly from the CockroachDB Cloud Console. An [Org Administrator]({% link cockroachcloud/authorization.md %}#org-administrator) can grant these roles.{% endcapture %}{{ who_can_upgrade }}
 
+{{site.data.alerts.callout_info}}
+This page describes the support of CockroachDB versions on CockroachDB Cloud, which is not affected by LTS or End of Support timelines specified for CockroachDB Self-Hosted.
+
+The CockroachDB Self-Hosted [Release Support Policy]({% link releases/release-support-policy.md %}) does not apply to CockroachDB Cloud.
+{{site.data.alerts.end}}
+
 ### Currently supported versions
 
 Version | Release Type | Support period | Release date | EOS date