DOCS: [8.3] Add 8.1.2 release notes (#85448) (#85557)

docs/reference/migration/migrate_8_1.asciidoc

@@ -9,6 +9,7 @@ your application to {es} 8.1.
 
 See also <<release-highlights>> and <<es-release-notes>>.
 
+
 [discrete]
 [[breaking-changes-8.1]]
 === Breaking changes
@@ -93,6 +94,7 @@ actions.
 Ensure that bulk actions are well-formed JSON objects containing a single entry
 with the correct key.
 ====
+// end::notable-breaking-changes[]
 
 [[deprecate_index_include_frozen_request_parameter_in_sql_api]]
 .Deprecate `index_include_frozen` request parameter in `_sql` API
@@ -110,5 +112,4 @@ queries. For some use cases, the frozen tier may be a suitable
 replacement for frozen indices. See {ref}/data-tiers.html[data tiers]
 for more information.
 ====
-// end::notable-breaking-changes[]
 

docs/reference/release-notes.asciidoc

@@ -6,6 +6,7 @@
 
 This section summarizes the changes in each release.
 
+* <<release-notes-8.1.2>>
 * <<release-notes-8.1.1>>
 * <<release-notes-8.1.0>>
 * <<release-notes-8.0.1>>
@@ -18,6 +19,7 @@ This section summarizes the changes in each release.
 
 --
 
+include::release-notes/8.1.2.asciidoc[]
 include::release-notes/8.1.1.asciidoc[]
 include::release-notes/8.1.0.asciidoc[]
 include::release-notes/8.0.1.asciidoc[]

docs/reference/release-notes/8.1.2.asciidoc

@@ -0,0 +1,42 @@
+[[release-notes-8.1.2]]
+== {es} version 8.1.2
+
+coming[8.1.2]
+
+Also see <<breaking-changes-8.1,Breaking changes in 8.1>>.
+
+[[bug-8.1.2]]
+[float]
+=== Bug fixes
+
+Authorization::
+* Add delete privilege to `kibana_system` for APM {es-pull}85085[#85085]
+
+Engine::
+* Increase store ref before snapshotting index commit {es-pull}84776[#84776]
+
+Infra/Core::
+* Return empty version instead of blowing up if we cannot find it {es-pull}85244[#85244]
+* Validate index format agreement for system index descriptors {es-pull}85173[#85173]
+* Wrap thread creation in `doPrivileged` call {es-pull}85180[#85180]
+
+Machine Learning::
+* Do not fetch source when finding index of last state docs {es-pull}85334[#85334]
+* Fixes for multi-line start patterns in text structure endpoint {es-pull}85066[#85066]
+* Reallocate model deployments on node shutdown events {es-pull}85310[#85310]
+
+Mapping::
+* Do not fail on duplicated content field filters {es-pull}85382[#85382]
+
+Search::
+* Increase store ref before analyzing disk usage {es-pull}84774[#84774]
+* Limit concurrent shard requests in disk usage API {es-pull}84900[#84900] (issue: {es-issue}84779[#84779])
+* `TransportBroadcastAction` should always set response for each shard {es-pull}84926[#84926]
+
+Snapshot/Restore::
+* Fix leaking listeners bug on frozen tier {es-pull}85239[#85239]
+
+Watcher::
+* No longer require master node to install Watcher templates {es-pull}85287[#85287] (issue: {es-issue}85043[#85043])
+
+

docs/reference/release-notes/highlights.asciidoc

@@ -7,21 +7,21 @@ For detailed information about this release, see the <<es-release-notes>> and
 <<breaking-changes>>.
 
 // Add previous release to the list
-// Other versions: 
-// {ref-bare}/7.last/release-highlights.html[7.last] 
+// Other versions:
+// {ref-bare}/7.last/release-highlights.html[7.last]
 // | {ref-bare}/8.0/release-highlights.html[8.0]
 
-// Use the notable-highlights tag to mark entries that 
+// Use the notable-highlights tag to mark entries that
 // should be featured in the Stack Installation and Upgrade Guide:
-// tag::notable-highlights[] 
+// tag::notable-highlights[]
 // [discrete]
 // === Heading
 //
-// Description. 
+// Description.
 // end::notable-highlights[]
 
 // Omit the notable highlights tag for entries that only need to appear in the ES ref:
-// [discrete] 
+// [discrete]
 // === Heading
 //
-// Description. 
+// Description.