Forward port release notes for 8.8.2 release (#97058) (#97908)

docs/reference/release-notes.asciidoc

@@ -8,6 +8,7 @@ This section summarizes the changes in each release.
 
 * <<release-notes-8.10.0>>
 * <<release-notes-8.9.0>>
+* <<release-notes-8.8.2>>
 * <<release-notes-8.8.1>>
 * <<release-notes-8.8.0>>
 * <<release-notes-8.7.1>>
@@ -47,6 +48,7 @@ This section summarizes the changes in each release.
 
 include::release-notes/8.10.0.asciidoc[]
 include::release-notes/8.9.0.asciidoc[]
+include::release-notes/8.8.2.asciidoc[]
 include::release-notes/8.8.1.asciidoc[]
 include::release-notes/8.8.0.asciidoc[]
 include::release-notes/8.7.1.asciidoc[]

docs/reference/release-notes/8.8.2.asciidoc

@@ -0,0 +1,43 @@
+[[release-notes-8.8.2]]
+== {es} version 8.8.2
+
+coming[8.8.2]
+
+Also see <<breaking-changes-8.8,Breaking changes in 8.8>>.
+
+[[bug-8.8.2]]
+[float]
+=== Bug fixes
+
+Aggregations::
+* Fix iteration of empty percentiles throwing Null Pointer Exception {es-pull}96668[#96668] (issue: {es-issue}96626[#96626])
+
+Health::
+* Uses `ClusterSettings` instead of Node `Settings` in `HealthMetadataService` {es-pull}96843[#96843] (issue: {es-issue}96219[#96219])
+
+Ingest Node::
+* Support dotted field notations in the reroute processor {es-pull}96243[#96243]
+
+Machine Learning::
+* Ensure NLP model inference queue is always cleared after shutdown or failure {es-pull}96738[#96738]
+
+SQL::
+* Fix translation of queries involving Version vals {es-pull}96540[#96540] (issue: {es-issue}96509[#96509])
+
+Search::
+* Increase concurrent request of opening point-in-time {es-pull}96782[#96782]
+
+TSDB::
+* The get data stream api incorrectly prints warning log for upgraded tsdb data streams {es-pull}96606[#96606]
+
+[[enhancement-8.8.2]]
+[float]
+=== Enhancements
+
+TSDB::
+* Change rollup thread pool settings {es-pull}96821[#96821] (issue: {es-issue}96758[#96758])
+
+Transform::
+* Adding null check to fix potential NPE {es-pull}96785[#96785] (issue: {es-issue}96781[#96781])
+
+