--- a/browser/config/version.txt
+++ b/browser/config/version.txt
@@ -1,1 +1,1 @@
-11.0a1
+12.0a1

--- a/config/milestone.txt
+++ b/config/milestone.txt
@@ -5,9 +5,9 @@
 #    x.x.x.x
 #    x.x.x+
 #
 # Referenced by milestone.pl.
 # Hopefully I'll be able to automate replacement of *all*
 # hardcoded milestones in the tree from these two files.
 #--------------------------------------------------------
 
-11.0a1
+12.0a1

--- a/js/src/config/milestone.txt
+++ b/js/src/config/milestone.txt
@@ -5,9 +5,9 @@
 #    x.x.x.x
 #    x.x.x+
 #
 # Referenced by milestone.pl.
 # Hopefully I'll be able to automate replacement of *all*
 # hardcoded milestones in the tree from these two files.
 #--------------------------------------------------------
 
-11.0a1
+12.0a1

--- a/mobile/android/confvars.sh
+++ b/mobile/android/confvars.sh
@@ -33,17 +33,17 @@
 # the provisions above, a recipient may use your version of this file under
 # the terms of any one of the MPL, the GPL or the LGPL.
 #
 # ***** END LICENSE BLOCK *****
 
 MOZ_APP_BASENAME=Fennec
 MOZ_APP_VENDOR=Mozilla
 
-MOZ_APP_VERSION=11.0a1
+MOZ_APP_VERSION=12.0a1
 
 MOZ_BRANDING_DIRECTORY=mobile/android/branding/unofficial
 MOZ_OFFICIAL_BRANDING_DIRECTORY=mobile/android/branding/official
 # MOZ_APP_DISPLAYNAME is set by branding/configure.sh
 
 MOZ_SAFE_BROWSING=
 MOZ_SERVICES_SYNC=1
 

--- a/mobile/xul/confvars.sh
+++ b/mobile/xul/confvars.sh
@@ -33,17 +33,17 @@
 # the provisions above, a recipient may use your version of this file under
 # the terms of any one of the MPL, the GPL or the LGPL.
 #
 # ***** END LICENSE BLOCK *****
 
 MOZ_APP_BASENAME=Fennec
 MOZ_APP_VENDOR=Mozilla
 
-MOZ_APP_VERSION=11.0a1
+MOZ_APP_VERSION=12.0a1
 
 MOZ_BRANDING_DIRECTORY=mobile/xul/branding/unofficial
 MOZ_OFFICIAL_BRANDING_DIRECTORY=mobile/xul/branding/official
 # MOZ_APP_DISPLAYNAME is set by branding/configure.sh
 
 MOZ_SAFE_BROWSING=
 MOZ_SERVICES_SYNC=1
 

--- a/xpcom/components/Module.h
+++ b/xpcom/components/Module.h
@@ -48,17 +48,17 @@ namespace mozilla {
 /**
  * A module implements one or more XPCOM components. This structure is used
  * for both binary and script modules, but the registration members
  * (cids/contractids/categoryentries) are unused for modules which are loaded
  * via a module loader.
  */
 struct Module
 {
-  static const unsigned int kVersion = 11;
+  static const unsigned int kVersion = 12;
 
   struct CIDEntry;
 
   typedef already_AddRefed<nsIFactory> (*GetFactoryProcPtr)
     (const Module& module, const CIDEntry& entry);
 
   typedef nsresult (*ConstructorProcPtr)(nsISupports* aOuter,
                                          const nsIID& aIID,