diff --git a/Libraries/Renderer/REVISION b/Libraries/Renderer/REVISION
index 0d3b50ab63f09c..2c1efdff048027 100644
--- a/Libraries/Renderer/REVISION
+++ b/Libraries/Renderer/REVISION
@@ -1 +1 @@
-bd7f4a013be3ef272a01874532bee71ad861e617
\ No newline at end of file
+a632f7de3bd35eaf6d5082054af4da92dd37cf20
\ No newline at end of file
diff --git a/Libraries/Renderer/implementations/ReactFabric-dev.fb.js b/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
index 1a89a0899f5517..978d18261fb538 100644
--- a/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
+++ b/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<2ebb47c89a60a8b3e667fdf7431261b6>>
+ * @generated SignedSource<<85633cd599819668a18b16a0756284c2>>
  */
 
 'use strict';
@@ -11173,7 +11173,7 @@ function mountTransition() {
   var start = startTransition.bind(null, setPending);
   var hook = mountWorkInProgressHook();
   hook.memoizedState = start;
-  return [start, isPending];
+  return [isPending, start];
 }
 
 function updateTransition() {
@@ -11182,7 +11182,7 @@ function updateTransition() {
 
   var hook = updateWorkInProgressHook();
   var start = hook.memoizedState;
-  return [start, isPending];
+  return [isPending, start];
 }
 
 function rerenderTransition() {
@@ -11191,7 +11191,7 @@ function rerenderTransition() {
 
   var hook = updateWorkInProgressHook();
   var start = hook.memoizedState;
-  return [start, isPending];
+  return [isPending, start];
 }
 
 var isUpdatingOpaqueValueInRenderPhase = false;
diff --git a/Libraries/Renderer/implementations/ReactFabric-prod.fb.js b/Libraries/Renderer/implementations/ReactFabric-prod.fb.js
index 3d6cb45e414bc2..1232dd04976f92 100644
--- a/Libraries/Renderer/implementations/ReactFabric-prod.fb.js
+++ b/Libraries/Renderer/implementations/ReactFabric-prod.fb.js
@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<f41656c617fa40163bc178f355249017>>
+ * @generated SignedSource<<9877a9ca3ef854c84fe796f0864c7089>>
  */
 
 "use strict";
@@ -3897,7 +3897,7 @@ var ContextOnlyDispatcher = {
         isPending = _mountState2[0];
       _mountState2 = startTransition.bind(null, _mountState2[1]);
       mountWorkInProgressHook().memoizedState = _mountState2;
-      return [_mountState2, isPending];
+      return [isPending, _mountState2];
     },
     useMutableSource: function(source, getSnapshot, subscribe) {
       var hook = mountWorkInProgressHook();
@@ -3946,8 +3946,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = updateReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = updateReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
@@ -3988,8 +3989,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = rerenderReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = rerenderReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
diff --git a/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js b/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js
index 09448caa825d82..3a76a5a766c0f3 100644
--- a/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js
+++ b/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js
@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<f4d536820af3da737ebc471060e63f42>>
+ * @generated SignedSource<<7da8cf3208220ac6e1e05d089bd22e17>>
  */
 
 "use strict";
@@ -3923,7 +3923,7 @@ var ContextOnlyDispatcher = {
         isPending = _mountState2[0];
       _mountState2 = startTransition.bind(null, _mountState2[1]);
       mountWorkInProgressHook().memoizedState = _mountState2;
-      return [_mountState2, isPending];
+      return [isPending, _mountState2];
     },
     useMutableSource: function(source, getSnapshot, subscribe) {
       var hook = mountWorkInProgressHook();
@@ -3972,8 +3972,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = updateReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = updateReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
@@ -4014,8 +4015,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = rerenderReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = rerenderReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
diff --git a/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js b/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
index 8d4c191e7f6ae0..86d72b9245218c 100644
--- a/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
+++ b/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<5f437c4c1fcda37e2bb8dab0d04f1431>>
+ * @generated SignedSource<<5646d53ee7f4f50af19833b5e7a7253c>>
  */
 
 'use strict';
@@ -11492,7 +11492,7 @@ function mountTransition() {
   var start = startTransition.bind(null, setPending);
   var hook = mountWorkInProgressHook();
   hook.memoizedState = start;
-  return [start, isPending];
+  return [isPending, start];
 }
 
 function updateTransition() {
@@ -11501,7 +11501,7 @@ function updateTransition() {
 
   var hook = updateWorkInProgressHook();
   var start = hook.memoizedState;
-  return [start, isPending];
+  return [isPending, start];
 }
 
 function rerenderTransition() {
@@ -11510,7 +11510,7 @@ function rerenderTransition() {
 
   var hook = updateWorkInProgressHook();
   var start = hook.memoizedState;
-  return [start, isPending];
+  return [isPending, start];
 }
 
 var isUpdatingOpaqueValueInRenderPhase = false;
diff --git a/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js b/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js
index 8dc378c6c35c75..26d1392f71d582 100644
--- a/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js
+++ b/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js
@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<ea82815c6b2135bf145c1c5895967692>>
+ * @generated SignedSource<<7fe4adbce18b530534dc96bc573966a5>>
  */
 
 "use strict";
@@ -3933,7 +3933,7 @@ var ContextOnlyDispatcher = {
         isPending = _mountState2[0];
       _mountState2 = startTransition.bind(null, _mountState2[1]);
       mountWorkInProgressHook().memoizedState = _mountState2;
-      return [_mountState2, isPending];
+      return [isPending, _mountState2];
     },
     useMutableSource: function(source, getSnapshot, subscribe) {
       var hook = mountWorkInProgressHook();
@@ -3982,8 +3982,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = updateReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = updateReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
@@ -4024,8 +4025,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = rerenderReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = rerenderReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
diff --git a/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js b/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js
index ef2ee2b9927ebe..6ad8d9e989be09 100644
--- a/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js
+++ b/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js
@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<f3ba739eb1c9f66a84cff47bff41d5c4>>
+ * @generated SignedSource<<feadd8235d80907d50c4c6a1249e0c85>>
  */
 
 "use strict";
@@ -3959,7 +3959,7 @@ var ContextOnlyDispatcher = {
         isPending = _mountState2[0];
       _mountState2 = startTransition.bind(null, _mountState2[1]);
       mountWorkInProgressHook().memoizedState = _mountState2;
-      return [_mountState2, isPending];
+      return [isPending, _mountState2];
     },
     useMutableSource: function(source, getSnapshot, subscribe) {
       var hook = mountWorkInProgressHook();
@@ -4008,8 +4008,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = updateReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = updateReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {
@@ -4050,8 +4051,9 @@ var ContextOnlyDispatcher = {
       return prevValue;
     },
     useTransition: function() {
-      var isPending = rerenderReducer(basicStateReducer)[0];
-      return [updateWorkInProgressHook().memoizedState, isPending];
+      var isPending = rerenderReducer(basicStateReducer)[0],
+        start = updateWorkInProgressHook().memoizedState;
+      return [isPending, start];
     },
     useMutableSource: updateMutableSource,
     useOpaqueIdentifier: function() {