diff --git a/core/android_soong_config_vars.mk b/core/android_soong_config_vars.mk
index bf113ee..d6ba61f 100644
--- a/core/android_soong_config_vars.mk
+++ b/core/android_soong_config_vars.mk
@@ -71,6 +71,10 @@
 
 $(call soong_config_set,art_module,source_build,$(ART_MODULE_BUILD_FROM_SOURCE))
 
+ifdef TARGET_BOARD_AUTO
+  $(call add_soong_config_var_value, ANDROID, target_board_auto, $(TARGET_BOARD_AUTO))
+endif
+
 # Ensure that those mainline modules who have individually toggleable prebuilts
 # are controlled by the MODULE_BUILD_FROM_SOURCE environment variable by
 # default.
@@ -106,6 +110,10 @@
 SYSTEMUI_OPTIMIZE_JAVA ?= true
 $(call add_soong_config_var,ANDROID,SYSTEMUI_OPTIMIZE_JAVA)
 
+# Disable Compose in SystemUI by default.
+SYSTEMUI_USE_COMPOSE ?= false
+$(call add_soong_config_var,ANDROID,SYSTEMUI_USE_COMPOSE)
+
 ifdef PRODUCT_AVF_ENABLED
 $(call add_soong_config_var_value,ANDROID,avf_enabled,$(PRODUCT_AVF_ENABLED))
 endif
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index a664b9d..3533851 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -103,7 +103,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-    PLATFORM_SECURITY_PATCH := 2023-02-05
+    PLATFORM_SECURITY_PATCH := 2023-03-05
 endif
 
 include $(BUILD_SYSTEM)/version_util.mk
diff --git a/target/product/window_extensions.mk b/target/product/window_extensions.mk
new file mode 100644
index 0000000..5f5431f
--- /dev/null
+++ b/target/product/window_extensions.mk
@@ -0,0 +1,24 @@
+#
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# /system_ext packages
+PRODUCT_PACKAGES += \
+    androidx.window.extensions \
+    androidx.window.sidecar
+
+# properties
+PRODUCT_PRODUCT_PROPERTIES += \
+    persist.wm.extensions.enabled=true