diff --git a/CHANGELOG.md b/CHANGELOG.md
index 644f6ec3..e90bcfaa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,21 @@
-## 5.3.0
+## 6.0.0
+
+(5.3.0 release notes are merged into 6.0.0)
 
 - [core] New API `Shell.Builder.setCommands(String...)`
+- [core] New API `Shell.submitTask(Task)`
+- [core] New API `Shell.Job.shellDied()`
 - [core] New internal task scheduling implementation
 - [core] Remove deprecated `Shell.sh/su` methods
+- [core] Deprecate `FLAG_REDIRECT_STDERR`
 - [service] Fix support on pre-6.0 devices
 - [service] Fix crashes on some LG devices
 
+### Migration Guide
+
+- Usage of `Shell.sh/su` methods should be directly replaced with `Shell.cmd`. If you only want to run certain jobs if the shell is running as root, manually check with `Shell.isRoot()` before creating the job.
+- The behavior of `FLAG_REDIRECT_STDERR` changed and usage is deprecated. Setting `FLAG_REDIRECT_STDERR` in `Shell.Builder.setFlags(int)` will start to internally enable `Shell.enableLegacyStderrRedirection` as a best-effort backwards compatibility support to emulate its behavior. Please note that the new `Shell.enableLegacyStderrRedirection` flag controls the behavior of the entire program, NOT on a per-shell basis as it used to be. If you want to redirect STDERR to STDOUT, please switch over to setting the same output list for both STDOUT and STDERR with `Shell.Job.to(List, List)` as soon as possible.
+
 ## 5.2.2
 
 - [service] Disable `dex2oat` when loading trampoline JAR
diff --git a/README.md b/README.md
index 07731334..b98b7cd4 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ repositories {
     maven { url 'https://jitpack.io' }
 }
 dependencies {
-    def libsuVersion = '5.3.0'
+    def libsuVersion = '6.0.0'
 
     // The core module that provides APIs to a shell
     implementation "com.github.topjohnwu.libsu:core:${libsuVersion}"
@@ -52,23 +52,21 @@ public class SplashActivity extends Activity {
         // Set settings before the main shell can be created
         Shell.enableVerboseLogging = BuildConfig.DEBUG;
         Shell.setDefaultBuilder(Shell.Builder.create()
-            .setFlags(Shell.FLAG_REDIRECT_STDERR)
-            .setTimeout(10)
-        );
+            .setFlags(Shell.FLAG_MOUNT_MASTER)
+            .setInitializers(ShellInit.class)
+            .setTimeout(10));
     }
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        // Preheat the main root shell in the splash screen
-        // so the app can use it afterwards without interrupting
-        // application flow (e.g. root permission prompt)
+        showSplashScreen();
+        // As an example, preload the main root shell in the splash screen
+        // so the app can use it afterwards without interrupting application
+        // flow (e.g. waiting for root permission prompt)
         Shell.getShell(shell -> {
             // The main shell is now constructed and cached
-            // Exit splash screen and enter main activity
-            Intent intent = new Intent(this, MainActivity.class);
-            startActivity(intent);
-            finish();
+            exitSplashScreen();
         });
     }
 }
@@ -95,8 +93,9 @@ boolean ok = result.isSuccess();     // return code == 0?
 // Async APIs
 Shell.cmd("setenforce 0").submit();   // submit and don't care results
 Shell.cmd("sleep 5", "echo hello").submit(result -> updateUI(result));
+Future<Shell.Result> futureResult = Shell.cmd("sleep 5", "echo hello").enqueue();
 
-// Run tasks and output to specific Lists
+// Run commands and output to specific Lists
 List<String> mmaps = new ArrayList<>();
 Shell.cmd("cat /proc/1/maps").to(mmaps).exec();
 List<String> stdout = new ArrayList<>();