diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7eb720904aac..6cf7c83efe02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,63 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## 5.15.0
+
+_Jul 29, 2022_
+
+We'd like to offer a big thanks to the 6 contributors who made this release possible. Here are some highlights ✨:
+
+- 🎁 Introduce aggregation (#5592) @flaviendelangle
+
+  Premium users can now aggregate data in the grid.
+  Extract information like sum, average, count, and others with a couple of clicks.
+  
+  https://user-images.githubusercontent.com/45398769/181581503-77cc412e-9d9e-4de1-8bc3-c3bccc54cdaa.mp4
+
+  To enable this feature, add `experimentalFeatures={{ aggregation: true }}`.
+  Aggregation functions are customizable and they combine well with row grouping.
+  See the [documentation](https://mui.com/x/react-data-grid/aggregation/) to explore everything it has to offer.
+
+- 🚀 Introduce row pinning (#4863) @cherniavskii
+
+  Pro users can now pin rows on top or bottom of the grid.
+
+  https://user-images.githubusercontent.com/45398769/181581493-56c733a3-6dd5-4546-bf8d-3f2dff72b14a.mp4
+
+  To do so, enable the feature with `experimentalFeatures={{ rowPinning: true }}` and provide the pinned rows data to the `pinnedRows` prop.
+  For more details, see the [documentation](https://mui.com/x/react-data-grid/row-pinning/).
+
+- 🌍 Add simplified Chinese (zh-CN) locale to pickers (#5584) @gamecss
+- 📚 Documentation improvements
+
+### `@mui/x-data-grid@v5.15.0` / `@mui/x-data-grid-pro@v5.15.0` / `@mui/x-data-grid-premium@v5.15.0`
+
+#### Changes
+
+- [DataGrid] Add prop to keep modifications while processing props (#5309) @m4theushw
+- [DataGrid] Fix container width change on React 18 (#5566) @m4theushw
+- [DataGrid] Fix ellipsis style convention (#5587) @oliviertassinari
+- [DataGridPro] Implement row pinning (#4863) @cherniavskii
+- [DataGridPremium] Make aggregation public (#5592) @cherniavskii
+- [l10n] Improve simplified Chinese (zh-CN) locale (#5584) @gamecss
+
+### `@mui/x-date-pickers@v5.0.0-beta.3` / `@mui/x-date-picker-pro@5.0.0-beta.3`
+
+#### Changes
+
+- [l10n] Add simplified Chinese (zh-CN) locale (#5584) @gamecss
+
+### Docs
+
+- [docs] Split docs page about rows (#5195) @flaviendelangle
+- [docs] Add warning clarifications (#5399) @alexfauquette
+- [docs] Correct slot CSS classes for Pro and Premium components (#5452) @alexfauquette
+- [docs] Fix internal link to `valueParser` (#5450) @alexfauquette
+
+### Core
+
+- [core] Upgrade monorepo (#5560) @m4theushw
+
 ## 5.14.0
 
 _Jul 21, 2022_
diff --git a/benchmark/package.json b/benchmark/package.json
index 483c9b617f48..88cec0fba4d6 100644
--- a/benchmark/package.json
+++ b/benchmark/package.json
@@ -1,6 +1,6 @@
 {
   "name": "benchmark",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "private": true,
   "scripts": {
     "browser": "webpack --config browser/webpack.config.js && node browser/scripts/benchmark.js"
diff --git a/docs/package.json b/docs/package.json
index e0ebc1b8ed38..e5f12c59622a 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "docs",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "private": true,
   "author": "MUI Team",
   "license": "MIT",
diff --git a/lerna.json b/lerna.json
index 058821198944..63f49a9c59ec 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,5 +1,5 @@
 {
   "npmClient": "yarn",
   "useWorkspaces": true,
-  "version": "5.14.0"
+  "version": "5.15.0"
 }
diff --git a/package.json b/package.json
index 14a6806caa18..ce70ee61a70b 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "5.14.0",
+  "version": "5.15.0",
   "private": true,
   "scripts": {
     "start": "yarn docs:dev",
diff --git a/packages/eslint-plugin-material-ui/package.json b/packages/eslint-plugin-material-ui/package.json
index 50956abb0a8c..789b5af952e1 100644
--- a/packages/eslint-plugin-material-ui/package.json
+++ b/packages/eslint-plugin-material-ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eslint-plugin-material-ui",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "private": true,
   "description": "Custom eslint rules for MUI X.",
   "main": "src/index.js",
diff --git a/packages/grid/x-data-grid-generator/package.json b/packages/grid/x-data-grid-generator/package.json
index ef9d7d2c8c03..27d38ea3eb64 100644
--- a/packages/grid/x-data-grid-generator/package.json
+++ b/packages/grid/x-data-grid-generator/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid-generator",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "description": "Generate fake data for demo purposes only.",
   "author": "MUI Team",
   "main": "src/index.ts",
@@ -32,7 +32,7 @@
   "dependencies": {
     "@babel/runtime": "^7.18.6",
     "@mui/base": "^5.0.0-alpha.80",
-    "@mui/x-data-grid-premium": "5.14.0",
+    "@mui/x-data-grid-premium": "5.15.0",
     "chance": "^1.1.8",
     "clsx": "^1.2.1",
     "lru-cache": "^7.13.1"
diff --git a/packages/grid/x-data-grid-premium/package.json b/packages/grid/x-data-grid-premium/package.json
index b4b4cfc2ba48..a17e0fbfe467 100644
--- a/packages/grid/x-data-grid-premium/package.json
+++ b/packages/grid/x-data-grid-premium/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid-premium",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "description": "The Premium plan edition of the data grid component (MUI X).",
   "author": "MUI Team",
   "main": "src/index.ts",
@@ -44,9 +44,9 @@
   "dependencies": {
     "@babel/runtime": "^7.18.6",
     "@mui/utils": "^5.4.1",
-    "@mui/x-data-grid": "5.14.0",
-    "@mui/x-data-grid-pro": "5.14.0",
-    "@mui/x-license-pro": "5.14.0",
+    "@mui/x-data-grid": "5.15.0",
+    "@mui/x-data-grid-pro": "5.15.0",
+    "@mui/x-license-pro": "5.15.0",
     "@types/format-util": "^1.0.2",
     "clsx": "^1.2.1",
     "exceljs": "^4.3.0",
diff --git a/packages/grid/x-data-grid-pro/package.json b/packages/grid/x-data-grid-pro/package.json
index 66030cd73638..deebb26b038c 100644
--- a/packages/grid/x-data-grid-pro/package.json
+++ b/packages/grid/x-data-grid-pro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid-pro",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "description": "The Pro plan edition of the data grid component (MUI X).",
   "author": "MUI Team",
   "main": "src/index.ts",
@@ -44,8 +44,8 @@
   "dependencies": {
     "@babel/runtime": "^7.18.6",
     "@mui/utils": "^5.4.1",
-    "@mui/x-data-grid": "5.14.0",
-    "@mui/x-license-pro": "5.14.0",
+    "@mui/x-data-grid": "5.15.0",
+    "@mui/x-license-pro": "5.15.0",
     "@types/format-util": "^1.0.2",
     "clsx": "^1.2.1",
     "prop-types": "^15.8.1",
diff --git a/packages/grid/x-data-grid/package.json b/packages/grid/x-data-grid/package.json
index 5412c6a61830..cee1720f8d47 100644
--- a/packages/grid/x-data-grid/package.json
+++ b/packages/grid/x-data-grid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "description": "The community edition of the data grid component (MUI X).",
   "author": "MUI Team",
   "main": "src/index.ts",
diff --git a/packages/storybook/package.json b/packages/storybook/package.json
index 7ddad0ea9e10..533067a51e4d 100644
--- a/packages/storybook/package.json
+++ b/packages/storybook/package.json
@@ -1,6 +1,6 @@
 {
   "name": "storybook",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "description": "Storybook components",
   "author": "MUI Team",
   "private": true,
@@ -18,11 +18,11 @@
   "dependencies": {
     "@mui/icons-material": "^5.8.0",
     "@mui/material": "^5.8.0",
-    "@mui/x-data-grid": "5.14.0",
-    "@mui/x-data-grid-generator": "5.14.0",
-    "@mui/x-data-grid-premium": "5.14.0",
-    "@mui/x-data-grid-pro": "5.14.0",
-    "@mui/x-license-pro": "5.14.0",
+    "@mui/x-data-grid": "5.15.0",
+    "@mui/x-data-grid-generator": "5.15.0",
+    "@mui/x-data-grid-premium": "5.15.0",
+    "@mui/x-data-grid-pro": "5.15.0",
+    "@mui/x-license-pro": "5.15.0",
     "@storybook/builder-webpack5": "^6.5.9",
     "@storybook/manager-webpack5": "^6.5.9",
     "react": "^17.0.2",
diff --git a/packages/x-date-pickers-pro/package.json b/packages/x-date-pickers-pro/package.json
index 811171a3410b..76acf060355e 100644
--- a/packages/x-date-pickers-pro/package.json
+++ b/packages/x-date-pickers-pro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-date-pickers-pro",
-  "version": "5.0.0-beta.2",
+  "version": "5.0.0-beta.3",
   "description": "The commercial edition of the date picker components (MUI X).",
   "author": "MUI Team",
   "main": "./src/index.js",
@@ -47,7 +47,7 @@
     "@date-io/luxon": "^2.14.0",
     "@date-io/moment": "^2.14.0",
     "@mui/utils": "^5.4.1",
-    "@mui/x-date-pickers": "5.0.0-beta.2",
+    "@mui/x-date-pickers": "5.0.0-beta.3",
     "@mui/x-license-pro": "5.12.1",
     "clsx": "^1.2.1",
     "prop-types": "^15.7.2",
diff --git a/packages/x-date-pickers/package.json b/packages/x-date-pickers/package.json
index ac331b3181f7..b8176ffa5df9 100644
--- a/packages/x-date-pickers/package.json
+++ b/packages/x-date-pickers/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-date-pickers",
-  "version": "5.0.0-beta.2",
+  "version": "5.0.0-beta.3",
   "description": "The community edition of the date picker components (MUI X).",
   "author": "MUI Team",
   "main": "./src/index.js",
diff --git a/packages/x-license-pro/package.json b/packages/x-license-pro/package.json
index cdb33ff0b302..69fa32666bf0 100644
--- a/packages/x-license-pro/package.json
+++ b/packages/x-license-pro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-license-pro",
-  "version": "5.14.0",
+  "version": "5.15.0",
   "description": "MUI X License verification",
   "author": "MUI Team",
   "main": "src/index.ts",