release notes and breaking changes updates (#11975)

changelogs/8.11.asciidoc

@@ -13,22 +13,15 @@ https://github.com/elastic/apm-server/compare/8.10\...8.11[View commits]
 ==== Breaking Changes
 - The `ecs.version` field has been removed from APM data streams {pull}11632[11632]
 
-[float]
-==== Deprecations
-
 [float]
 ==== Bug fixes
 - Add back gzip support for grpc otlp endpoint {pull}11434[11434]
 - Correctly mark jvm.memory.non_heap.pool.* and jvm.fd.* metrics as internal {pull}11303[11303]
 - Fix tail-based sampling discarding low throughput and low sample rate traces {pull}11642[11642]
 - Add memory based autoscaling for service destination aggregation groups {pull}11739[11739]
 
-[float]
-==== Intake API Changes
-
 [float]
 ==== Added
 - Support and define DLM data retention period in the apmpackage {pull}11539[11539]
 - Expose new metrics into the local batch processor {pull}11582[11582]
 - Add geoip processing to app_logs ingest pipeline on `client.ip` {pull}11699[11699]
-

docs/apm-breaking.asciidoc

@@ -7,6 +7,18 @@
 This section describes the breaking changes and deprecations introduced in this release
 and previous minor versions.
 
+// tag::811-bc[]
+[float]
+[[breaking-changes-8.11]]
+=== 8.11
+
+The following breaking changes are introduced in APM version 8.11.0:
+
+- The `ecs.version` field has been removed from APM data streams.
+This change should not impact most users as this field is not used by the APM UI.
+For more details, see https://github.com/elastic/apm-server/pull/11632[PR #11632]
+// end::811-bc[]
+
 // tag::810-bc[]
 [float]
 [[breaking-changes-8.10]]