diff --git a/protos/launcher_atom.proto b/protos/launcher_atom.proto
index d1bf152..c559988 100644
--- a/protos/launcher_atom.proto
+++ b/protos/launcher_atom.proto
@@ -60,6 +60,7 @@
     PredictedHotseatContainer predicted_hotseat_container = 10;
     TaskSwitcherContainer task_switcher_container = 11;
     TaskBarContainer task_bar_container = 12;
+    WallpapersContainer wallpapers_container = 13;
     ExtendedContainers extended_containers = 20;
   }
 }
@@ -247,6 +248,12 @@
   }
 }
 
+// Represents wallpapers container for quick switching.
+message WallpapersContainer {
+  // Number of wallpapers in the container.
+  optional int32 cardinality = 1;
+}
+
 // Represents state of EditText field before update.
 enum FromState {
   // Default value.
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
index 4f5f27a..e79d56b 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
@@ -17,8 +17,6 @@
 package com.android.launcher3.uioverrides.states;
 
 import com.android.launcher3.Launcher;
-import com.android.launcher3.R;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.quickstep.views.RecentsView;
 
 /**
@@ -38,12 +36,6 @@
     @Override
     public float getSplitSelectTranslation(Launcher launcher) {
         RecentsView recentsView = launcher.getOverviewPanel();
-        int splitPosition = recentsView.getSplitPlaceholder().getActiveSplitStagePosition();
-        if (!recentsView.shouldShiftThumbnailsForSplitSelect()) {
-            return 0f;
-        }
-        PagedOrientationHandler orientationHandler = recentsView.getPagedOrientationHandler();
-        int direction = orientationHandler.getSplitTranslationDirectionFactor(splitPosition);
-        return launcher.getResources().getDimension(R.dimen.split_placeholder_size) * direction;
+        return recentsView.getSplitSelectTranslation();
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/FloatingTaskView.java b/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
index adcaf65..0cea45e 100644
--- a/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
+++ b/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
@@ -150,6 +150,11 @@
         mOrientationHandler.setSecondaryScale(mSplitPlaceholderView.getIconView(), childScaleY);
     }
 
+    public void updateOrientationHandler(PagedOrientationHandler orientationHandler) {
+        mOrientationHandler = orientationHandler;
+        mSplitPlaceholderView.getIconView().setRotation(mOrientationHandler.getDegreesRotated());
+    }
+
     protected void initPosition(RectF pos, InsettableFrameLayout.LayoutParams lp) {
         mStartingPosition.set(pos);
         lp.ignoreInsets = true;
diff --git a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
index 3e06f55..6b7d8a5 100644
--- a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -24,7 +24,6 @@
 
 import android.annotation.TargetApi;
 import android.content.Context;
-import android.content.res.Configuration;
 import android.os.Build;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
@@ -171,10 +170,13 @@
     }
 
     @Override
-    protected void onConfigurationChanged(Configuration newConfig) {
-        super.onConfigurationChanged(newConfig);
+    protected void onOrientationChanged() {
+        super.onOrientationChanged();
         // If overview is in modal state when rotate, reset it to overview state without running
         // animation.
         setModalStateEnabled(false);
+        if (mActivity.isInState(OVERVIEW_SPLIT_SELECT)) {
+            onRotateInSplitSelectionState();
+        }
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
index 0294828..fcc6272 100644
--- a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
+++ b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
@@ -16,6 +16,8 @@
 
 package com.android.quickstep.views;
 
+import static com.android.quickstep.SysUINavigationMode.Mode.THREE_BUTTONS;
+
 import android.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Rect;
@@ -33,6 +35,7 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.R;
+import com.android.launcher3.uioverrides.ApiWrapper;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
 import com.android.quickstep.SysUINavigationMode;
@@ -152,7 +155,7 @@
     public void setInsets(Rect insets) {
         mInsets.set(insets);
         updateVerticalMargin(SysUINavigationMode.getMode(getContext()));
-        updateHorizontalPadding();
+        updatePaddingAndTranslations();
     }
 
     public void updateHiddenFlags(@ActionsHiddenFlags int visibilityFlags, boolean enable) {
@@ -195,8 +198,37 @@
         return mMultiValueAlpha.getProperty(INDEX_FULLSCREEN_ALPHA);
     }
 
-    private void updateHorizontalPadding() {
-        setPadding(mInsets.left, 0, mInsets.right, 0);
+    /**
+     * Aligns OverviewActionsView vertically with and offsets horizontal position based on
+     * 3 button nav container in taskbar.
+     */
+    private void updatePaddingAndTranslations() {
+        boolean alignFor3ButtonTaskbar = mDp.isTaskbarPresent &&
+                SysUINavigationMode.getMode(getContext()) == THREE_BUTTONS;
+        if (alignFor3ButtonTaskbar) {
+            // Add extra horizontal spacing
+            int additionalPadding = ApiWrapper.getHotseatEndOffset(getContext());
+            if (isLayoutRtl()) {
+                setPadding(mInsets.left + additionalPadding, 0, mInsets.right, 0);
+            } else {
+                setPadding(mInsets.left, 0, mInsets.right + additionalPadding, 0);
+            }
+
+            // Align vertically, using taskbar height + mDp.taskbarOffsetY() to guestimate
+            // where the button nav top is
+            View startActionView = findViewById(R.id.action_screenshot);
+            int marginBottom = getOverviewActionsBottomMarginPx(
+                    SysUINavigationMode.getMode(getContext()), mDp);
+            int actionsTop = (mDp.heightPx - marginBottom - mInsets.bottom);
+            int navTop = mDp.heightPx - (mDp.taskbarSize + mDp.getTaskbarOffsetY());
+            int transY = navTop - actionsTop
+                    + ((mDp.taskbarSize - startActionView.getHeight()) / 2);
+            setTranslationY(transY);
+        } else {
+            setPadding(mInsets.left, 0, mInsets.right, 0);
+            setTranslationX(0);
+            setTranslationY(0);
+        }
     }
 
     /** Updates vertical margins for different navigation mode or configuration changes. */
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 2ad586d..428cc98 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -91,6 +91,7 @@
 import android.util.AttributeSet;
 import android.util.FloatProperty;
 import android.util.Log;
+import android.util.Pair;
 import android.util.SparseBooleanArray;
 import android.view.HapticFeedbackConstants;
 import android.view.KeyEvent;
@@ -1620,7 +1621,7 @@
                 || !mOrientationHandler.equals(oldOrientationHandler)) {
             // Changed orientations, update controllers so they intercept accordingly.
             mActivity.getDragLayer().recreateControllers();
-            setModalStateEnabled(false);
+            onOrientationChanged();
         }
 
         boolean isInLandscape = mOrientationState.getTouchRotation() != ROTATION_0
@@ -1639,6 +1640,9 @@
         setCurrentPage(mCurrentPage);
     }
 
+    protected void onOrientationChanged() {
+    }
+
     // Update task size and padding that are dependent on DeviceProfile and insets.
     private void updateSizeAndPadding() {
         DeviceProfile dp = mActivity.getDeviceProfile();
@@ -3333,7 +3337,7 @@
      * {@link #mFirstFloatingTaskView}.
      */
     public boolean shouldShiftThumbnailsForSplitSelect() {
-        return !mActivity.getDeviceProfile().isTablet;
+        return !mActivity.getDeviceProfile().isTablet || !mActivity.getDeviceProfile().isLandscape;
     }
 
     protected void onDismissAnimationEnds() {
@@ -3519,6 +3523,7 @@
     protected void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
         updateRecentsRotation();
+        onOrientationChanged();
     }
 
     /**
@@ -3833,13 +3838,18 @@
      * Apply scroll offset to children of RecentsView when entering split select.
      */
     public void applySplitPrimaryScrollOffset() {
+        float taskSplitScrollOffsetPrimary = 0f;
+        float clearAllSplitScrollOffsetPrimar = 0f;
         if (isSplitPlaceholderFirstInGrid()) {
-            for (int i = 0; i < getTaskViewCount(); i++) {
-                requireTaskViewAt(i).setSplitScrollOffsetPrimary(mSplitPlaceholderSize);
-            }
+            taskSplitScrollOffsetPrimary = mSplitPlaceholderSize;
         } else if (isSplitPlaceholderLastInGrid()) {
-            mClearAllButton.setSplitSelectScrollOffsetPrimary(-mSplitPlaceholderSize);
+            clearAllSplitScrollOffsetPrimar = -mSplitPlaceholderSize;
         }
+
+        for (int i = 0; i < getTaskViewCount(); i++) {
+            requireTaskViewAt(i).setSplitScrollOffsetPrimary(taskSplitScrollOffsetPrimary);
+        }
+        mClearAllButton.setSplitSelectScrollOffsetPrimary(clearAllSplitScrollOffsetPrimar);
     }
 
     /**
@@ -3987,6 +3997,41 @@
         }
     }
 
+    /**
+     * Returns how much additional translation there should be for each of the child TaskViews.
+     * Note that the translation can be its primary or secondary dimension.
+     */
+    public float getSplitSelectTranslation() {
+        int splitPosition = getSplitPlaceholder().getActiveSplitStagePosition();
+        if (!shouldShiftThumbnailsForSplitSelect()) {
+            return 0f;
+        }
+        PagedOrientationHandler orientationHandler = getPagedOrientationHandler();
+        int direction = orientationHandler.getSplitTranslationDirectionFactor(
+                splitPosition, mActivity.getDeviceProfile());
+        return mActivity.getResources().getDimension(R.dimen.split_placeholder_size) * direction;
+    }
+
+    protected void onRotateInSplitSelectionState() {
+        mOrientationHandler.getInitialSplitPlaceholderBounds(mSplitPlaceholderSize,
+                mActivity.getDeviceProfile(),
+                mSplitSelectStateController.getActiveSplitStagePosition(), mTempRect);
+        mTempRectF.set(mTempRect);
+        // TODO(194414938) set correct corner radius
+        mFirstFloatingTaskView.updateOrientationHandler(mOrientationHandler);
+        mFirstFloatingTaskView.update(mTempRectF, /*progress=*/1f, /*windowRadius=*/0f);
+
+        PagedOrientationHandler orientationHandler = getPagedOrientationHandler();
+        Pair<FloatProperty, FloatProperty> taskViewsFloat =
+                orientationHandler.getSplitSelectTaskOffset(
+                        TASK_PRIMARY_SPLIT_TRANSLATION, TASK_SECONDARY_SPLIT_TRANSLATION,
+                        mActivity.getDeviceProfile());
+        taskViewsFloat.first.set(this, getSplitSelectTranslation());
+        taskViewsFloat.second.set(this, 0f);
+
+        applySplitPrimaryScrollOffset();
+    }
+
     private void updateDeadZoneRects() {
         // Get the deadzone rect surrounding the clear all button to not dismiss overview to home
         mClearAllButtonDeadZoneRect.setEmpty();
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 98cb5ae..2d31aa4 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -92,9 +92,6 @@
     public static final BooleanFlag ENABLE_DEVICE_SEARCH = new DeviceFlag(
             "ENABLE_DEVICE_SEARCH", true, "Allows on device search in all apps");
 
-    public static final BooleanFlag ENABLE_ONE_SEARCH = new DeviceFlag("ENABLE_ONE_SEARCH", false,
-            "Use homescreen search box to complete allApps searches");
-
     public static final BooleanFlag ENABLE_TWOLINE_ALLAPPS = getDebugFlag(
             "ENABLE_TWOLINE_ALLAPPS", false, "Enables two line label inside all apps.");
 
diff --git a/src/com/android/launcher3/model/data/ItemInfo.java b/src/com/android/launcher3/model/data/ItemInfo.java
index b72f462..e30829e 100644
--- a/src/com/android/launcher3/model/data/ItemInfo.java
+++ b/src/com/android/launcher3/model/data/ItemInfo.java
@@ -25,6 +25,7 @@
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_SETTINGS;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_SHORTCUTS;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_TASKSWITCHER;
+import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WALLPAPERS;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
 import static com.android.launcher3.LauncherSettings.Favorites.EXTENDED_CONTAINERS;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_APPLICATION;
@@ -55,6 +56,7 @@
 import com.android.launcher3.logger.LauncherAtom.Shortcut;
 import com.android.launcher3.logger.LauncherAtom.ShortcutsContainer;
 import com.android.launcher3.logger.LauncherAtom.TaskSwitcherContainer;
+import com.android.launcher3.logger.LauncherAtom.WallpapersContainer;
 import com.android.launcher3.logger.LauncherAtomExtensions.ExtendedContainers;
 import com.android.launcher3.model.ModelWriter;
 import com.android.launcher3.util.ContentWriter;
@@ -428,6 +430,10 @@
                 return ContainerInfo.newBuilder()
                         .setTaskSwitcherContainer(TaskSwitcherContainer.getDefaultInstance())
                         .build();
+            case CONTAINER_WALLPAPERS:
+                return ContainerInfo.newBuilder()
+                        .setWallpapersContainer(WallpapersContainer.getDefaultInstance())
+                        .build();
             case EXTENDED_CONTAINERS:
                 return ContainerInfo.newBuilder()
                         .setExtendedContainers(getExtendedContainer())
diff --git a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
index 0c39067..9a2d6d8 100644
--- a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
+++ b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
@@ -255,7 +255,7 @@
     }
 
     @Override
-    public int getSplitTranslationDirectionFactor(int stagePosition) {
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
         if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
             return -1;
         } else {
diff --git a/src/com/android/launcher3/touch/PagedOrientationHandler.java b/src/com/android/launcher3/touch/PagedOrientationHandler.java
index 54b30fb..95168fb 100644
--- a/src/com/android/launcher3/touch/PagedOrientationHandler.java
+++ b/src/com/android/launcher3/touch/PagedOrientationHandler.java
@@ -95,7 +95,8 @@
     int getScrollOffsetStart(View view, Rect insets);
     int getScrollOffsetEnd(View view, Rect insets);
     int getSecondaryTranslationDirectionFactor();
-    int getSplitTranslationDirectionFactor(@StagePosition int stagePosition);
+    int getSplitTranslationDirectionFactor(@StagePosition int stagePosition,
+            DeviceProfile deviceProfile);
     ChildBounds getChildBounds(View child, int childStart, int pageCenter, boolean layoutChild);
     void setMaxScroll(AccessibilityEvent event, int maxScroll);
     boolean getRecentsRtlSetting(Resources resources);
diff --git a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
index cb1ba7d..7d70f77 100644
--- a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
+++ b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
@@ -261,8 +261,8 @@
     }
 
     @Override
-    public int getSplitTranslationDirectionFactor(int stagePosition) {
-        if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
+        if (deviceProfile.isLandscape && stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
             return -1;
         } else {
             return 1;
diff --git a/src/com/android/launcher3/touch/SeascapePagedViewHandler.java b/src/com/android/launcher3/touch/SeascapePagedViewHandler.java
index ce2e136..a921f94 100644
--- a/src/com/android/launcher3/touch/SeascapePagedViewHandler.java
+++ b/src/com/android/launcher3/touch/SeascapePagedViewHandler.java
@@ -37,7 +37,6 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
 import com.android.launcher3.util.SplitConfigurationOptions.StagedSplitBounds;
 import com.android.launcher3.views.BaseDragLayer;
@@ -53,7 +52,7 @@
     }
 
     @Override
-    public int getSplitTranslationDirectionFactor(int stagePosition) {
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
         if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
             return -1;
         } else {