diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ac37bcd402..b491c3d7c4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,46 @@
+<a name="8.4.0"></a>
+# [8.4.0](https://github.com/NG-ZORRO/ng-zorro-antd/compare/8.3.1...8.4.0) (2019-10-15)
+
+
+### Bug Fixes
+
+* **tree:** fix nzHideUnMatched bug ([#4286](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4286)) ([87dd59e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/87dd59e)), closes [#3970](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3970)
+* **tree:** update when property isLeaf is changed ([#4289](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4289)) ([4b90577](https://github.com/NG-ZORRO/ng-zorro-antd/commit/4b90577)), closes [#4037](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4037)
+* ***:** fix style error with 3.23.6 ([#4258](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4258)) ([120c5be](https://github.com/NG-ZORRO/ng-zorro-antd/commit/120c5be))
+* **auto-complete:** not emit changes when retype same value while open ([#4215](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4215)) ([21e91e3](https://github.com/NG-ZORRO/ng-zorro-antd/commit/21e91e3))
+* **i18n:** update and add translations for de_DE ([#4239](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4239)) ([f819fad](https://github.com/NG-ZORRO/ng-zorro-antd/commit/f819fad))
+* **pagination:** add space between page size and slash ([#4038](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4038)) ([#4039](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4039)) ([b1bba9e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b1bba9e))
+* **select:** fix select dropdown position error ([#4267](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4267)) ([0ccc62a](https://github.com/NG-ZORRO/ng-zorro-antd/commit/0ccc62a)), closes [#3855](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3855)
+* **select:** fix select focus & blur & autoFocus event ([#4270](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4270)) ([c7d90b7](https://github.com/NG-ZORRO/ng-zorro-antd/commit/c7d90b7)), closes [#3991](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3991) [#3757](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3757) [#3708](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3708)
+* **select:** fix select input not grow correctly in IE ([#4262](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4262)) ([9be58d9](https://github.com/NG-ZORRO/ng-zorro-antd/commit/9be58d9)), closes [#2427](https://github.com/NG-ZORRO/ng-zorro-antd/issues/2427) [#3907](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3907)
+* **select:** fix select scroll bottom not emit with search ([#4272](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4272)) ([e9c5541](https://github.com/NG-ZORRO/ng-zorro-antd/commit/e9c5541)), closes [#3777](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3777)
+* **table:** fix table fixed style when nzData change ([#4274](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4274)) ([b33533c](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b33533c)), closes [#4253](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4253)
+* **tag:** nzNoAnimation not working ([#4257](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4257)) ([63f947e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/63f947e)), closes [#4244](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4244)
+* **time-picker:** add null input judgement when using datefns ([#4283](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4283)) ([a05bc02](https://github.com/NG-ZORRO/ng-zorro-antd/commit/a05bc02)), closes [#3854](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3854)
+* **tooltip:** fix properties updated before origin is set ([#4229](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4229)) ([b2b9c13](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b2b9c13)), closes [#4250](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4250)
+* **tooltip:** fix tooltip component not destory ([#4291](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4291)) ([05cbd9f](https://github.com/NG-ZORRO/ng-zorro-antd/commit/05cbd9f)), closes [#4103](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4103)
+
+
+### Features
+
+* **breadcrumb:** add `nzRouteLabel` property ([#4167](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4167)) ([34a8b0a](https://github.com/NG-ZORRO/ng-zorro-antd/commit/34a8b0a))
+* **cascader:** support option render template ([#4127](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4127)) ([8345c54](https://github.com/NG-ZORRO/ng-zorro-antd/commit/8345c54)), closes [#3699](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3699)
+* **mention:** support for adaptive boundary ([#4263](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4263)) ([812e1c5](https://github.com/NG-ZORRO/ng-zorro-antd/commit/812e1c5)), closes [#4260](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4260)
+* **page-header:** new pageheader style and support avatar ([#4208](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4208)) ([c2fc616](https://github.com/NG-ZORRO/ng-zorro-antd/commit/c2fc616))
+* **select:** support default value not in the option list ([#4261](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4261)) ([51b26b4](https://github.com/NG-ZORRO/ng-zorro-antd/commit/51b26b4)), closes [#3672](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3672) [#4000](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4000)
+* **spin:** support global indicator ([#4221](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4221)) ([a7ecb8b](https://github.com/NG-ZORRO/ng-zorro-antd/commit/a7ecb8b)), closes [#2792](https://github.com/NG-ZORRO/ng-zorro-antd/issues/2792)
+* **table:** support extra panel with nz-th-extra selector ([#4278](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4278)) ([4701ee6](https://github.com/NG-ZORRO/ng-zorro-antd/commit/4701ee6))
+* **table:** support td break-word display ([#4273](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4273)) ([93ab305](https://github.com/NG-ZORRO/ng-zorro-antd/commit/93ab305))
+* **tree-select:** support `nzCheckStrictly` property ([#4149](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4149)) ([1f8cf1d](https://github.com/NG-ZORRO/ng-zorro-antd/commit/1f8cf1d)), closes [#4120](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4120)
+
+
+### Performance Improvements
+
+* **tree:** change the collapsed of the treeNode to ngIf ([#3947](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3947)) ([cbfc5ed](https://github.com/NG-ZORRO/ng-zorro-antd/commit/cbfc5ed))
+* **typography, tabs:** make the `destroy$` complete when destroy ([#4271](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4271)) ([51f4713](https://github.com/NG-ZORRO/ng-zorro-antd/commit/51f4713))
+
+
+
 <a name="8.3.1"></a>
 ## [8.3.1](https://github.com/NG-ZORRO/ng-zorro-antd/compare/8.3.0...8.3.1) (2019-09-24)
 
diff --git a/components/package.json b/components/package.json
index bb2a4b26230..b3beb320274 100644
--- a/components/package.json
+++ b/components/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ng-zorro-antd",
-  "version": "8.3.1",
+  "version": "8.4.0",
   "license": "MIT",
   "description": "An enterprise-class UI components based on Ant Design and Angular",
   "schematics": "./schematics/collection.json",
@@ -37,6 +37,6 @@
     "@angular/core": "^8.0.0",
     "@angular/platform-browser": "^8.0.0",
     "@angular/router": "^8.0.0",
-    "rxjs": "^6.5.2"
+    "rxjs": "^6.4.0"
   }
 }
diff --git a/components/version/version.ts b/components/version/version.ts
index 2060dfe72cf..6d10edc9411 100644
--- a/components/version/version.ts
+++ b/components/version/version.ts
@@ -8,4 +8,4 @@
 
 import { Version } from '@angular/core';
 
-export const VERSION = new Version('8.3.1');
+export const VERSION = new Version('8.4.0');
diff --git a/docs/changelog.en-US.md b/docs/changelog.en-US.md
index bf85ba92570..eed2887fd5f 100755
--- a/docs/changelog.en-US.md
+++ b/docs/changelog.en-US.md
@@ -13,6 +13,45 @@ timeline: true
 * Major version release is not included in this schedule for breaking change and new features.
 
 ---
+## 8.4.0
+`2019-10-15`
+
+### Bug Fixes
+
+* **tree:** fix nzHideUnMatched bug ([#4286](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4286)) ([87dd59e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/87dd59e)), closes [#3970](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3970)
+* **tree:** update when property isLeaf is changed ([#4289](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4289)) ([4b90577](https://github.com/NG-ZORRO/ng-zorro-antd/commit/4b90577)), closes [#4037](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4037)
+* **auto-complete:** not emit changes when retype same value while open ([#4215](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4215)) ([21e91e3](https://github.com/NG-ZORRO/ng-zorro-antd/commit/21e91e3))
+* **i18n:** update and add translations for de_DE ([#4239](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4239)) ([f819fad](https://github.com/NG-ZORRO/ng-zorro-antd/commit/f819fad))
+* **pagination:** add space between page size and slash ([#4038](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4038)) ([#4039](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4039)) ([b1bba9e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b1bba9e))
+* **select:** fix select dropdown position error ([#4267](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4267)) ([0ccc62a](https://github.com/NG-ZORRO/ng-zorro-antd/commit/0ccc62a)), closes [#3855](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3855)
+* **select:** fix select focus & blur & autoFocus event ([#4270](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4270)) ([c7d90b7](https://github.com/NG-ZORRO/ng-zorro-antd/commit/c7d90b7)), closes [#3991](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3991) [#3757](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3757) [#3708](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3708)
+* **select:** fix select input not grow correctly in IE ([#4262](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4262)) ([9be58d9](https://github.com/NG-ZORRO/ng-zorro-antd/commit/9be58d9)), closes [#2427](https://github.com/NG-ZORRO/ng-zorro-antd/issues/2427) [#3907](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3907)
+* **select:** fix select scroll bottom not emit with search ([#4272](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4272)) ([e9c5541](https://github.com/NG-ZORRO/ng-zorro-antd/commit/e9c5541)), closes [#3777](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3777)
+* **table:** fix table fixed style when nzData change ([#4274](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4274)) ([b33533c](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b33533c)), closes [#4253](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4253)
+* **tag:** nzNoAnimation not working ([#4257](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4257)) ([63f947e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/63f947e)), closes [#4244](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4244)
+* **time-picker:** add null input judgement when using datefns ([#4283](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4283)) ([a05bc02](https://github.com/NG-ZORRO/ng-zorro-antd/commit/a05bc02)), closes [#3854](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3854)
+* **tooltip:** fix properties updated before origin is set ([#4229](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4229)) ([b2b9c13](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b2b9c13)), closes [#4250](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4250)
+* **tooltip:** fix tooltip component not destory ([#4291](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4291)) ([05cbd9f](https://github.com/NG-ZORRO/ng-zorro-antd/commit/05cbd9f)), closes [#4103](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4103)
+
+
+### Features
+
+* **breadcrumb:** add `nzRouteLabel` property ([#4167](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4167)) ([34a8b0a](https://github.com/NG-ZORRO/ng-zorro-antd/commit/34a8b0a))
+* **cascader:** support option render template ([#4127](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4127)) ([8345c54](https://github.com/NG-ZORRO/ng-zorro-antd/commit/8345c54)), closes [#3699](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3699)
+* **mention:** support for adaptive boundary ([#4263](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4263)) ([812e1c5](https://github.com/NG-ZORRO/ng-zorro-antd/commit/812e1c5)), closes [#4260](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4260)
+* **page-header:** new pageheader style and support avatar ([#4208](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4208)) ([c2fc616](https://github.com/NG-ZORRO/ng-zorro-antd/commit/c2fc616))
+* **select:** support default value not in the option list ([#4261](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4261)) ([51b26b4](https://github.com/NG-ZORRO/ng-zorro-antd/commit/51b26b4)), closes [#3672](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3672) [#4000](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4000)
+* **spin:** support global indicator ([#4221](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4221)) ([a7ecb8b](https://github.com/NG-ZORRO/ng-zorro-antd/commit/a7ecb8b)), closes [#2792](https://github.com/NG-ZORRO/ng-zorro-antd/issues/2792)
+* **table:** support extra panel with nz-th-extra selector ([#4277](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4277)) ([cd8d0f5](https://github.com/NG-ZORRO/ng-zorro-antd/commit/cd8d0f5))
+* **table:** support td break-word display ([#4273](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4273)) ([93ab305](https://github.com/NG-ZORRO/ng-zorro-antd/commit/93ab305))
+* **tree-select:** support `nzCheckStrictly` property ([#4149](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4149)) ([1f8cf1d](https://github.com/NG-ZORRO/ng-zorro-antd/commit/1f8cf1d)), closes [#4120](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4120)
+
+
+### Performance Improvements
+
+* **tree:** change the collapsed of the treeNode to ngIf ([#3947](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3947)) ([cbfc5ed](https://github.com/NG-ZORRO/ng-zorro-antd/commit/cbfc5ed))
+* **typography, tabs:** make the `destroy$` complete when destroy ([#4271](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4271)) ([51f4713](https://github.com/NG-ZORRO/ng-zorro-antd/commit/51f4713))
+
 
 
 ## 8.3.1
diff --git a/docs/changelog.zh-CN.md b/docs/changelog.zh-CN.md
index 7dfe420eb25..a59a990cee2 100755
--- a/docs/changelog.zh-CN.md
+++ b/docs/changelog.zh-CN.md
@@ -13,6 +13,44 @@ timeline: true
 * 主版本号：含有破坏性更新和新特性，不在发布周期内。
 
 ---
+## 8.4.0
+`2019-10-15`
+
+### Bug Fixes
+
+* **tree:** 修复 nzHideUnMatched 不生效的问题 ([#4286](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4286)) ([87dd59e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/87dd59e)), closes [#3970](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3970)
+* **tree:** 修复 isLeaf 属性变化时不更新的问题 ([#4289](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4289)) ([4b90577](https://github.com/NG-ZORRO/ng-zorro-antd/commit/4b90577)), closes [#4037](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4037)
+* **auto-complete:** 修复输入相同数据不触发变更的问题 ([#4215](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4215)) ([21e91e3](https://github.com/NG-ZORRO/ng-zorro-antd/commit/21e91e3))
+* **i18n:** 修复 de_DE 语言 ([#4239](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4239)) ([f819fad](https://github.com/NG-ZORRO/ng-zorro-antd/commit/f819fad))
+* **pagination:** 修复空格缺失问题 ([#4038](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4038)) ([#4039](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4039)) ([b1bba9e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b1bba9e))
+* **select:** 修复多选情况时下拉菜单位置问题 ([#4267](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4267)) ([0ccc62a](https://github.com/NG-ZORRO/ng-zorro-antd/commit/0ccc62a)), closes [#3855](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3855)
+* **select:** 修复 focus、blur 方法和 autoFocus 事件 ([#4270](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4270)) ([c7d90b7](https://github.com/NG-ZORRO/ng-zorro-antd/commit/c7d90b7)), closes [#3991](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3991) [#3757](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3757) [#3708](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3708)
+* **select:** 修复 IE 下输入框宽度问题 ([#4262](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4262)) ([9be58d9](https://github.com/NG-ZORRO/ng-zorro-antd/commit/9be58d9)), closes [#2427](https://github.com/NG-ZORRO/ng-zorro-antd/issues/2427) [#3907](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3907)
+* **select:** 修复 scroll bottom 事件在搜索时失效的问题 ([#4272](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4272)) ([e9c5541](https://github.com/NG-ZORRO/ng-zorro-antd/commit/e9c5541)), closes [#3777](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3777)
+* **table:** 修复当 nzData 变更时固定 table 样式不生效的问题 ([#4274](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4274)) ([b33533c](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b33533c)), closes [#4253](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4253)
+* **tag:** 修复 nzNoAnimation 不生效的问题 ([#4257](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4257)) ([63f947e](https://github.com/NG-ZORRO/ng-zorro-antd/commit/63f947e)), closes [#4244](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4244)
+* **time-picker:** 修复 date-fns 下 time-picker 默认值显示问题 ([#4283](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4283)) ([a05bc02](https://github.com/NG-ZORRO/ng-zorro-antd/commit/a05bc02)), closes [#3854](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3854)
+* **tooltip:** 修复 tooltip 在 nzVisible 默认值时报错问题 ([#4229](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4229)) ([b2b9c13](https://github.com/NG-ZORRO/ng-zorro-antd/commit/b2b9c13)), closes [#4250](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4250)
+* **tooltip:** 修复当 tooltip 定位元素销毁时 tooltip 未销毁的问题 ([#4291](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4291)) ([05cbd9f](https://github.com/NG-ZORRO/ng-zorro-antd/commit/05cbd9f)), closes [#4103](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4103)
+
+
+### Features
+
+* **breadcrumb:** 增加 `nzRouteLabel` 属性 ([#4167](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4167)) ([34a8b0a](https://github.com/NG-ZORRO/ng-zorro-antd/commit/34a8b0a))
+* **cascader:** 支持自定义 option 渲染模板 ([#4127](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4127)) ([8345c54](https://github.com/NG-ZORRO/ng-zorro-antd/commit/8345c54)), closes [#3699](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3699)
+* **mention:** 支持位置自动更新 ([#4263](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4263)) ([812e1c5](https://github.com/NG-ZORRO/ng-zorro-antd/commit/812e1c5)), closes [#4260](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4260)
+* **page-header:** 更新样式并支持 avatar 功能 ([#4208](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4208)) ([c2fc616](https://github.com/NG-ZORRO/ng-zorro-antd/commit/c2fc616))
+* **select:** 支持展示未在 option 列表中的默认值([#4261](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4261)) ([51b26b4](https://github.com/NG-ZORRO/ng-zorro-antd/commit/51b26b4)), closes [#3672](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3672) [#4000](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4000)
+* **spin:** 支持全局配置 indicator ([#4221](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4221)) ([a7ecb8b](https://github.com/NG-ZORRO/ng-zorro-antd/commit/a7ecb8b)), closes [#2792](https://github.com/NG-ZORRO/ng-zorro-antd/issues/2792)
+* **table:** 支持 nz-th-extra selector ([#4278](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4278)) ([4701ee6](https://github.com/NG-ZORRO/ng-zorro-antd/commit/4701ee6))
+* **table:** 支持 td 折行显示属性 ([#4273](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4273)) ([93ab305](https://github.com/NG-ZORRO/ng-zorro-antd/commit/93ab305))
+* **tree-select:** 支持 `nzCheckStrictly` 属性 ([#4149](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4149)) ([1f8cf1d](https://github.com/NG-ZORRO/ng-zorro-antd/commit/1f8cf1d)), closes [#4120](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4120)
+
+
+### Performance Improvements
+
+* **tree:** 优化 tree 动画效果及性能 ([#3947](https://github.com/NG-ZORRO/ng-zorro-antd/issues/3947)) ([cbfc5ed](https://github.com/NG-ZORRO/ng-zorro-antd/commit/cbfc5ed))
+* **typography, tabs:** 优化内存占用 ([#4271](https://github.com/NG-ZORRO/ng-zorro-antd/issues/4271)) ([51f4713](https://github.com/NG-ZORRO/ng-zorro-antd/commit/51f4713))
 
 ## 8.3.1
 `2019-09-24`