Update revision for next SDK Preview.

Change-Id: Ic55aeb466c0193935ac8068162156086ec0cb6bf
diff --git a/sdk/build_tools_source.prop_template b/sdk/build_tools_source.prop_template
index 06a2ff8..de08650 100644
--- a/sdk/build_tools_source.prop_template
+++ b/sdk/build_tools_source.prop_template
@@ -1,5 +1,5 @@
 Pkg.UserSrc=false
 // due to the codename this resolve to 22 instead of 23, so replace it with hardcoded version for now.
 //Pkg.Revision=${PLATFORM_SDK_VERSION}.0.0
-Pkg.Revision=23.0.0 rc3
+Pkg.Revision=23.0.0 rc4
 
diff --git a/sdk/doc_source.prop_template b/sdk/doc_source.prop_template
index 523d6bd..3d4fac5 100644
--- a/sdk/doc_source.prop_template
+++ b/sdk/doc_source.prop_template
@@ -1,4 +1,4 @@
 Pkg.UserSrc=false
-Pkg.Revision=2
+Pkg.Revision=3
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
diff --git a/sdk/source_source.prop_template b/sdk/source_source.prop_template
index 523d6bd..3d4fac5 100644
--- a/sdk/source_source.prop_template
+++ b/sdk/source_source.prop_template
@@ -1,4 +1,4 @@
 Pkg.UserSrc=false
-Pkg.Revision=2
+Pkg.Revision=3
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}