1.12.1 Update, Not much modder facing changes, 1.12 mods should load and run fine on this version.

src/main/java/net/minecraftforge/common/ForgeVersion.java

@@ -54,15 +54,15 @@ public class ForgeVersion
     //This number is incremented every time we remove deprecated code/major API changes, never reset
     public static final int majorVersion    = 14;
     //This number is incremented every minecraft release, never reset
-    public static final int minorVersion    = 21;
+    public static final int minorVersion    = 22;
     //This number is incremented every time a interface changes or new major feature is added, and reset every Minecraft version
-    public static final int revisionVersion = 1;
+    public static final int revisionVersion = 0;
     //This number is incremented every time Jenkins builds Forge, and never reset. Should always be 0 in the repo code.
     public static final int buildVersion    = 0;
     // This is the minecraft version we're building for - used in various places in Forge/FML code
-    public static final String mcVersion = "1.12";
+    public static final String mcVersion = "1.12.1";
     // This is the MCP data version we're using
-    public static final String mcpVersion = "9.40";
+    public static final String mcpVersion = "9.41";
     @SuppressWarnings("unused")
     private static Status status = PENDING;
     @SuppressWarnings("unused")

src/main/java/net/minecraftforge/fml/common/AutomaticEventSubscriber.java

@@ -78,7 +78,7 @@ public class AutomaticEventSubscriber
                         continue; //We're not injecting this guy
                     }
                     FMLLog.log.debug("Registering @EventBusSubscriber for {} for mod {}", targ.getClassName(), mod.getModId());
-                    Class<?> subscriptionTarget = Class.forName(targ.getClassName(), true, mcl);
+                    Class<?> subscriptionTarget = Class.forName(targ.getClassName(), false, mcl);
                     MinecraftForge.EVENT_BUS.register(subscriptionTarget);
                     FMLLog.log.debug("Injected @EventBusSubscriber class {}", targ.getClassName());
                 }

src/main/java/net/minecraftforge/fml/common/FMLModContainer.java

@@ -264,6 +264,8 @@ public class FMLModContainer implements ModContainer
                 mcVersionString = "[1.9.4,1.10.2]";
         if ("[1.11]".equals(mcVersionString))
             mcVersionString = "[1.11,1.11.2]";
+        if ("[1.12]".equals(mcVersionString))
+            mcVersionString = "[1.12,1.12.1]";
         if (!Strings.isNullOrEmpty(mcVersionString))
         {
             minecraftAccepted = VersionParser.parseRange(mcVersionString);