diff --git a/packages/react-dom/src/__tests__/ReactComponentLifeCycle-test.js b/packages/react-dom/src/__tests__/ReactComponentLifeCycle-test.js
index fd286f1e68c8..4a0d9f5f4149 100644
--- a/packages/react-dom/src/__tests__/ReactComponentLifeCycle-test.js
+++ b/packages/react-dom/src/__tests__/ReactComponentLifeCycle-test.js
@@ -709,9 +709,9 @@ describe('ReactComponentLifeCycle', () => {
       );
     }).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated',
-        'componentWillReceiveProps is deprecated',
-        'componentWillUpdate is deprecated',
+        'componentWillMount has been renamed',
+        'componentWillReceiveProps has been renamed',
+        'componentWillUpdate has been renamed',
       ],
       {withoutStack: true},
     );
@@ -748,9 +748,9 @@ describe('ReactComponentLifeCycle', () => {
       );
     }).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated',
-        'componentWillReceiveProps is deprecated',
-        'componentWillUpdate is deprecated',
+        'componentWillMount has been renamed',
+        'componentWillReceiveProps has been renamed',
+        'componentWillUpdate has been renamed',
       ],
       {withoutStack: true},
     );
@@ -815,7 +815,10 @@ describe('ReactComponentLifeCycle', () => {
         {withoutStack: true},
       );
     }).toLowPriorityWarnDev(
-      ['componentWillMount is deprecated', 'componentWillUpdate is deprecated'],
+      [
+        'componentWillMount has been renamed',
+        'componentWillUpdate has been renamed',
+      ],
       {withoutStack: true},
     );
 
@@ -863,7 +866,7 @@ describe('ReactComponentLifeCycle', () => {
           'https://fb.me/react-async-component-lifecycle-hooks',
         {withoutStack: true},
       );
-    }).toLowPriorityWarnDev(['componentWillMount is deprecated'], {
+    }).toLowPriorityWarnDev(['componentWillMount has been renamed'], {
       withoutStack: true,
     });
 
@@ -887,7 +890,7 @@ describe('ReactComponentLifeCycle', () => {
           'https://fb.me/react-async-component-lifecycle-hooks',
         {withoutStack: true},
       );
-    }).toLowPriorityWarnDev(['componentWillReceiveProps is deprecated'], {
+    }).toLowPriorityWarnDev(['componentWillReceiveProps has been renamed'], {
       withoutStack: true,
     });
   });
@@ -921,7 +924,10 @@ describe('ReactComponentLifeCycle', () => {
         {withoutStack: true},
       );
     }).toLowPriorityWarnDev(
-      ['componentWillMount is deprecated', 'componentWillUpdate is deprecated'],
+      [
+        'componentWillMount has been renamed',
+        'componentWillUpdate has been renamed',
+      ],
       {withoutStack: true},
     );
 
@@ -967,7 +973,7 @@ describe('ReactComponentLifeCycle', () => {
           'https://fb.me/react-async-component-lifecycle-hooks',
         {withoutStack: true},
       );
-    }).toLowPriorityWarnDev(['componentWillMount is deprecated'], {
+    }).toLowPriorityWarnDev(['componentWillMount has been renamed'], {
       withoutStack: true,
     });
 
@@ -990,7 +996,7 @@ describe('ReactComponentLifeCycle', () => {
           'https://fb.me/react-async-component-lifecycle-hooks',
         {withoutStack: true},
       );
-    }).toLowPriorityWarnDev(['componentWillReceiveProps is deprecated'], {
+    }).toLowPriorityWarnDev(['componentWillReceiveProps has been renamed'], {
       withoutStack: true,
     });
   });
@@ -1130,9 +1136,9 @@ describe('ReactComponentLifeCycle', () => {
       ReactDOM.render(<MyComponent foo="bar" />, div),
     ).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated',
-        'componentWillReceiveProps is deprecated',
-        'componentWillUpdate is deprecated',
+        'componentWillMount has been renamed',
+        'componentWillReceiveProps has been renamed',
+        'componentWillUpdate has been renamed',
       ],
       {withoutStack: true},
     );
@@ -1403,17 +1409,42 @@ describe('ReactComponentLifeCycle', () => {
       ReactDOM.render(<MyComponent x={1} />, container),
     ).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated and will be removed in the next major version. ' +
-          'Use componentDidMount instead. As a temporary workaround, ' +
-          'you can rename to UNSAFE_componentWillMount.' +
-          '\n\nPlease update the following components: MyComponent',
-        'componentWillReceiveProps is deprecated and will be removed in the next major version. ' +
-          'Use static getDerivedStateFromProps instead.' +
-          '\n\nPlease update the following components: MyComponent',
-        'componentWillUpdate is deprecated and will be removed in the next major version. ' +
-          'Use componentDidUpdate instead. As a temporary workaround, ' +
-          'you can rename to UNSAFE_componentWillUpdate.' +
-          '\n\nPlease update the following components: MyComponent',
+        'componentWillMount has been renamed to UNSAFE_componentWillMount, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          '- If you initialize state in componentWillMount, move this logic into the constructor.\n' +
+          '- If you fetch data or perform other side effects in componentWillMount, ' +
+          'move this logic into componentDidMount.\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: MyComponent\n',
+
+        'componentWillReceiveProps has been renamed to UNSAFE_componentWillReceiveProps, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          "- If you're updating state whenever props change, " +
+          'move this logic into static getDerivedStateFromProps.\n' +
+          '- If you fetch data or perform other side effects in componentWillReceiveProps, ' +
+          'move this logic into componentDidUpdate.\n' +
+          '- Refactor your code to use memoization techniques instead of derived state. ' +
+          'Learn more at: https://fb.me/react-derived-state\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: MyComponent\n',
+
+        'componentWillUpdate has been renamed to UNSAFE_componentWillUpdate, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          '- If you fetch data or perform other side effects in componentWillUpdate, ' +
+          'move this logic into componentDidUpdate.\n' +
+          "- If you're reading DOM properties before an update, " +
+          'move this logic into getSnapshotBeforeUpdate.\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: MyComponent\n',
       ],
       {withoutStack: true},
     );
diff --git a/packages/react-dom/src/__tests__/ReactDOMServerLifecycles-test.js b/packages/react-dom/src/__tests__/ReactDOMServerLifecycles-test.js
index 76230a323035..4aed0e0246a6 100644
--- a/packages/react-dom/src/__tests__/ReactDOMServerLifecycles-test.js
+++ b/packages/react-dom/src/__tests__/ReactDOMServerLifecycles-test.js
@@ -229,7 +229,7 @@ describe('ReactDOMServerLifecycles', () => {
 
     expect(() =>
       ReactDOMServer.renderToString(<Component />),
-    ).toLowPriorityWarnDev('componentWillMount() is deprecated', {
+    ).toLowPriorityWarnDev('componentWillMount has been renamed', {
       withoutStack: true,
     });
     expect(log).toEqual(['componentWillMount', 'UNSAFE_componentWillMount']);
@@ -286,10 +286,9 @@ describe('ReactDOMServerLifecycles', () => {
 
     expect(() =>
       ReactDOMServer.renderToString(<Component />),
-    ).toLowPriorityWarnDev(
-      'Component: componentWillMount() is deprecated and will be removed in the next major version.',
-      {withoutStack: true},
-    );
+    ).toLowPriorityWarnDev('componentWillMount has been renamed', {
+      withoutStack: true,
+    });
   });
 
   it('should warn about deprecated lifecycle hooks', () => {
@@ -302,11 +301,9 @@ describe('ReactDOMServerLifecycles', () => {
 
     expect(() =>
       ReactDOMServer.renderToString(<Component />),
-    ).toLowPriorityWarnDev(
-      'Warning: Component: componentWillMount() is deprecated and will be removed ' +
-        'in the next major version.',
-      {withoutStack: true},
-    );
+    ).toLowPriorityWarnDev('componentWillMount has been renamed', {
+      withoutStack: true,
+    });
 
     // De-duped
     ReactDOMServer.renderToString(<Component />);
diff --git a/packages/react-dom/src/__tests__/ReactServerRenderingHydration-test.js b/packages/react-dom/src/__tests__/ReactServerRenderingHydration-test.js
index 4d046af383ce..f107446c5a86 100644
--- a/packages/react-dom/src/__tests__/ReactServerRenderingHydration-test.js
+++ b/packages/react-dom/src/__tests__/ReactServerRenderingHydration-test.js
@@ -363,7 +363,7 @@ describe('ReactDOMServerHydration', () => {
     expect(() => {
       element.innerHTML = ReactDOMServer.renderToString(markup);
     }).toLowPriorityWarnDev(
-      ['componentWillMount() is deprecated and will be removed'],
+      ['componentWillMount has been renamed to UNSAFE_componentWillMount'],
       {withoutStack: true},
     );
     expect(element.textContent).toBe('Hi');
@@ -373,7 +373,7 @@ describe('ReactDOMServerHydration', () => {
         'Please update the following components to use componentDidMount instead: ComponentWithWarning',
       );
     }).toLowPriorityWarnDev(
-      ['componentWillMount is deprecated and will be removed'],
+      ['componentWillMount has been renamed to UNSAFE_componentWillMount'],
       {withoutStack: true},
     );
     expect(element.textContent).toBe('Hi');
diff --git a/packages/react-dom/src/server/ReactPartialRenderer.js b/packages/react-dom/src/server/ReactPartialRenderer.js
index ce078dcb7177..cc4354424b4a 100644
--- a/packages/react-dom/src/server/ReactPartialRenderer.js
+++ b/packages/react-dom/src/server/ReactPartialRenderer.js
@@ -573,13 +573,18 @@ function resolve(
             if (!didWarnAboutDeprecatedWillMount[componentName]) {
               lowPriorityWarning(
                 false,
-                '%s: componentWillMount() is deprecated and will be ' +
-                  'removed in the next major version. Read about the motivations ' +
-                  'behind this change: ' +
-                  'https://fb.me/react-async-component-lifecycle-hooks' +
-                  '\n\n' +
-                  'As a temporary workaround, you can rename to ' +
-                  'UNSAFE_componentWillMount instead.',
+                'componentWillMount has been renamed to UNSAFE_componentWillMount, ' +
+                  "and the old name won't work in the next major version of React.\n" +
+                  'We suggest doing one of the following:\n' +
+                  '- If you initialize state in componentWillMount, move this logic into the constructor.\n' +
+                  '- If you fetch data or perform other side effects in componentWillMount, ' +
+                  'move this logic into componentDidMount.\n' +
+                  '- To rename all deprecated lifecycles to their new names, you can run ' +
+                  '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+                  '(Note that the warning will still be logged in strict mode.)\n' +
+                  '\nPlease update the following components: %s\n' +
+                  '\nLearn about this warning, with more examples and suggestions here:\n' +
+                  'https://fb.me/react-async-component-lifecycle-hooks',
                 componentName,
               );
               didWarnAboutDeprecatedWillMount[componentName] = true;
diff --git a/packages/react-reconciler/src/ReactStrictModeWarnings.js b/packages/react-reconciler/src/ReactStrictModeWarnings.js
index 143e7ebd4a7b..acd6b438899a 100644
--- a/packages/react-reconciler/src/ReactStrictModeWarnings.js
+++ b/packages/react-reconciler/src/ReactStrictModeWarnings.js
@@ -141,12 +141,18 @@ if (__DEV__) {
 
       lowPriorityWarning(
         false,
-        'componentWillMount is deprecated and will be removed in the next major version. ' +
-          'Use componentDidMount instead. As a temporary workaround, ' +
-          'you can rename to UNSAFE_componentWillMount.' +
-          '\n\nPlease update the following components: %s' +
-          '\n\nLearn more about this warning here:' +
-          '\nhttps://fb.me/react-async-component-lifecycle-hooks',
+        'componentWillMount has been renamed to UNSAFE_componentWillMount, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          '- If you initialize state in componentWillMount, move this logic into the constructor.\n' +
+          '- If you fetch data or perform other side effects in componentWillMount, ' +
+          'move this logic into componentDidMount.\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: %s\n' +
+          '\nLearn more about this warning here:\n' +
+          'https://fb.me/react-async-component-lifecycle-hooks',
         sortedNames,
       );
 
@@ -164,11 +170,21 @@ if (__DEV__) {
 
       lowPriorityWarning(
         false,
-        'componentWillReceiveProps is deprecated and will be removed in the next major version. ' +
-          'Use static getDerivedStateFromProps instead.' +
-          '\n\nPlease update the following components: %s' +
-          '\n\nLearn more about this warning here:' +
-          '\nhttps://fb.me/react-async-component-lifecycle-hooks',
+        'componentWillReceiveProps has been renamed to UNSAFE_componentWillReceiveProps, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          "- If you're updating state whenever props change, " +
+          'move this logic into static getDerivedStateFromProps.\n' +
+          '- If you fetch data or perform other side effects in componentWillReceiveProps, ' +
+          'move this logic into componentDidUpdate.\n' +
+          '- Refactor your code to use memoization techniques instead of derived state. ' +
+          'Learn more at: https://fb.me/react-derived-state\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: %s\n' +
+          '\nLearn more about this warning here:\n' +
+          'https://fb.me/react-async-component-lifecycle-hooks',
         sortedNames,
       );
 
@@ -186,12 +202,19 @@ if (__DEV__) {
 
       lowPriorityWarning(
         false,
-        'componentWillUpdate is deprecated and will be removed in the next major version. ' +
-          'Use componentDidUpdate instead. As a temporary workaround, ' +
-          'you can rename to UNSAFE_componentWillUpdate.' +
-          '\n\nPlease update the following components: %s' +
-          '\n\nLearn more about this warning here:' +
-          '\nhttps://fb.me/react-async-component-lifecycle-hooks',
+        'componentWillUpdate has been renamed to UNSAFE_componentWillUpdate, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          '- If you fetch data or perform other side effects in componentWillUpdate, ' +
+          'move this logic into componentDidUpdate.\n' +
+          "- If you're reading DOM properties before an update, " +
+          'move this logic into getSnapshotBeforeUpdate.\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: %s\n' +
+          '\nLearn more about this warning here:\n' +
+          'https://fb.me/react-async-component-lifecycle-hooks',
         sortedNames,
       );
 
diff --git a/packages/react/src/__tests__/ReactStrictMode-test.internal.js b/packages/react/src/__tests__/ReactStrictMode-test.internal.js
index 14b33ce99180..d7939d1327ec 100644
--- a/packages/react/src/__tests__/ReactStrictMode-test.internal.js
+++ b/packages/react/src/__tests__/ReactStrictMode-test.internal.js
@@ -429,9 +429,9 @@ describe('ReactStrictMode', () => {
         );
       }).toLowPriorityWarnDev(
         [
-          'componentWillMount is deprecated',
-          'componentWillReceiveProps is deprecated',
-          'componentWillUpdate is deprecated',
+          'componentWillMount has been renamed',
+          'componentWillReceiveProps has been renamed',
+          'componentWillUpdate has been renamed',
         ],
         {withoutStack: true},
       );
@@ -517,7 +517,7 @@ describe('ReactStrictMode', () => {
             '\n\ncomponentWillMount: Please update the following components ' +
             'to use componentDidMount instead: Baz',
         ]);
-      }).toLowPriorityWarnDev(['componentWillMount is deprecated'], {
+      }).toLowPriorityWarnDev(['componentWillMount has been renamed'], {
         withoutStack: true,
       });
 
diff --git a/packages/react/src/__tests__/createReactClassIntegration-test.internal.js b/packages/react/src/__tests__/createReactClassIntegration-test.internal.js
index b1bd7c9b1c91..d22e7ee50abc 100644
--- a/packages/react/src/__tests__/createReactClassIntegration-test.internal.js
+++ b/packages/react/src/__tests__/createReactClassIntegration-test.internal.js
@@ -51,10 +51,16 @@ describe('create-react-class-integration', () => {
       });
 
       expect(() => ReactNative.render(<View />, 1)).toLowPriorityWarnDev(
-        'componentWillMount is deprecated and will be removed in the next major version. ' +
-          'Use componentDidMount instead. As a temporary workaround, ' +
-          'you can rename to UNSAFE_componentWillMount.' +
-          '\n\nPlease update the following components: MyNativeComponent',
+        'componentWillMount has been renamed to UNSAFE_componentWillMount, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          '- If you initialize state in componentWillMount, move this logic into the constructor.\n' +
+          '- If you fetch data or perform other side effects in componentWillMount, ' +
+          'move this logic into componentDidMount.\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: MyNativeComponent\n',
         {withoutStack: true},
       );
     });
@@ -68,9 +74,19 @@ describe('create-react-class-integration', () => {
       });
 
       expect(() => ReactNative.render(<View />, 1)).toLowPriorityWarnDev(
-        'componentWillReceiveProps is deprecated and will be removed in the next major version. ' +
-          'Use static getDerivedStateFromProps instead.' +
-          '\n\nPlease update the following components: MyNativeComponent',
+        'componentWillReceiveProps has been renamed to UNSAFE_componentWillReceiveProps, ' +
+          "and the old name won't work in the next major version of React.\n\n" +
+          'We suggest doing one of the following:\n' +
+          "- If you're updating state whenever props change, " +
+          'move this logic into static getDerivedStateFromProps.\n' +
+          '- If you fetch data or perform other side effects in componentWillReceiveProps, ' +
+          'move this logic into componentDidUpdate.\n' +
+          '- Refactor your code to use memoization techniques instead of derived state. ' +
+          'Learn more at: https://fb.me/react-derived-state\n' +
+          '- To rename all deprecated lifecycles to their new names, you can run ' +
+          '`npx react-codemod rename-unsafe-lifecycles <path/to/code>` in your project folder. ' +
+          '(Note that the warning will still be logged in strict mode.)\n' +
+          '\nPlease update the following components: MyNativeComponent\n',
         {withoutStack: true},
       );
     });
diff --git a/packages/react/src/__tests__/createReactClassIntegration-test.js b/packages/react/src/__tests__/createReactClassIntegration-test.js
index 36b6bb047732..542a35087033 100644
--- a/packages/react/src/__tests__/createReactClassIntegration-test.js
+++ b/packages/react/src/__tests__/createReactClassIntegration-test.js
@@ -560,9 +560,9 @@ describe('create-react-class-integration', () => {
       );
     }).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated',
-        'componentWillReceiveProps is deprecated',
-        'componentWillUpdate is deprecated',
+        'componentWillMount has been renamed',
+        'componentWillReceiveProps has been renamed',
+        'componentWillUpdate has been renamed',
       ],
       {withoutStack: true},
     );
@@ -604,9 +604,9 @@ describe('create-react-class-integration', () => {
       );
     }).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated',
-        'componentWillReceiveProps is deprecated',
-        'componentWillUpdate is deprecated',
+        'componentWillMount has been renamed',
+        'componentWillReceiveProps has been renamed',
+        'componentWillUpdate has been renamed',
       ],
       {withoutStack: true},
     );
@@ -649,9 +649,9 @@ describe('create-react-class-integration', () => {
       ReactDOM.render(<Component foo="bar" />, div),
     ).toLowPriorityWarnDev(
       [
-        'componentWillMount is deprecated',
-        'componentWillReceiveProps is deprecated',
-        'componentWillUpdate is deprecated',
+        'componentWillMount has been renamed',
+        'componentWillReceiveProps has been renamed',
+        'componentWillUpdate has been renamed',
       ],
       {withoutStack: true},
     );