[DOCS] Adds known issue to 6.7.0 release notes
@@ -65,6 +65,21 @@ SQL::
Also see <<breaking-changes-6.7,Breaking changes in 6.7>>.
+[float]
+=== Known issues
+
+A new `docker` `build_type` value was introduced in 6.7.0 for Docker images,
+which caused two problems:
+
+* If you perform a rolling upgrade to 6.7.0 on nodes that are running the
+official Docker container, they cannot rejoin the cluster. Upgrade to 6.7.1
+instead or perform a <<restart-upgrade,full cluster restart upgrade>>.
+(issue: {issue}/40784[#40784])
+* If you have a 6.6 or earlier Java High Level REST client, it cannot understand
+the new `build_type` value. For example, it cannot read main responses on `/`
+from a cluster that's running 6.7.0. Upgrade your client to 6.7.0 or later.
+(issue: {issue}/40511[#40511])
+
[[breaking-6.7.0]]
[float]
=== Breaking changes
