docs: Add 1.20.1 release notes to main

docs/root/version_history/current.rst

@@ -13,7 +13,6 @@ Minor Behavior Changes
 
 * bandwidth_limit: added :ref:`response trailers <envoy_v3_api_field_extensions.filters.http.bandwidth_limit.v3.BandwidthLimit.enable_response_trailers>` when request or response delay are enforced.
 * bandwidth_limit: added :ref:`bandwidth limit stats <config_http_filters_bandwidth_limit>` *request_enforced* and *response_enforced*.
-* config: the log message for "gRPC config stream closed" now uses the most recent error message, and reports seconds instead of milliseconds for how long the most recent status has been received.
 * dns: now respecting the returned DNS TTL for resolved hosts, rather than always relying on the hard-coded :ref:`dns_refresh_rate. <envoy_v3_api_field_config.cluster.v3.Cluster.dns_refresh_rate>` This behavior can be temporarily reverted by setting the runtime guard ``envoy.reloadable_features.use_dns_ttl`` to false.
 * http: envoy will now proxy 102 and 103 headers from upstream, though as with 100s only the first 1xx response headers will be sent. This behavioral change by can temporarily reverted by setting runtime guard ``envoy.reloadable_features.proxy_102_103`` to false.
 * http: usage of the experimental matching API is no longer guarded behind a feature flag, as the corresponding protobuf fields have been marked as WIP.
@@ -28,9 +27,7 @@ Bug Fixes
 
 * ext_authz: fix the ext_authz http filter to correctly set response flags to ``UAEX`` when a connection is denied.
 * ext_authz: fix the ext_authz network filter to correctly set response flag and code details to ``UAEX`` when a connection is denied.
-* listener: fixed the crash when updating listeners that do not bind to port.
 * listener: fixed issue where more than one listener could listen on the same port if using reuse port, thus randomly accepting connections on different listeners. This configuration is now rejected.
-* tcp: fixed a bug where upstream circuit breakers applied HTTP per-request bounds to TCP connections.
 * thrift_proxy: fix the thrift_proxy connection manager to correctly report success/error response metrics when performing :ref:`payload passthrough <envoy_v3_api_field_extensions.filters.network.thrift_proxy.v3.ThriftProxy.payload_passthrough>`.
 
 Removed Config or Runtime

docs/root/version_history/v1.20.1.rst

@@ -0,0 +1,32 @@
+1.20.1 (November 30, 2021)
+==========================
+
+Incompatible Behavior Changes
+-----------------------------
+*Changes that are expected to cause an incompatibility if applicable; deployment changes are likely required*
+
+Minor Behavior Changes
+----------------------
+*Changes that may cause incompatibilities for some users, but should not for most*
+
+* config: the log message for "gRPC config stream closed" now uses the most recent error message, and reports seconds instead of milliseconds for how long the most recent status has been received.
+
+Bug Fixes
+---------
+*Changes expected to improve the state of the world and are unlikely to have negative effects*
+
+* http: remove redundant Warn log in HTTP codec.
+* listener: fix a crash when updating any listener that does not bind to port.
+* listener: listener add can reuse the listener socket of a draining filter chain listener and fix the request lost.
+* mac: fix crash on startup on macOS 12 by changing the default allocator.
+* tcp: fixed a bug where upstream circuit breakers applied HTTP per-request bounds to TCP connections.
+
+Removed Config or Runtime
+-------------------------
+*Normally occurs at the end of the* :ref:`deprecation period <deprecated>`
+
+New Features
+------------
+
+Deprecated
+----------

docs/root/version_history/version_history.rst

@@ -7,6 +7,7 @@ Version history
   :titlesonly:
 
   current
+  v1.20.1
   v1.20.0
   v1.19.1
   v1.19.0