diff --git a/src/compatibility/4.3/versions.jd b/src/compatibility/4.3/versions.jd
index 8d2009d..321a4fc 100644
--- a/src/compatibility/4.3/versions.jd
+++ b/src/compatibility/4.3/versions.jd
@@ -14,4 +14,5 @@
 <code>android.os.Build.VERSION.RELEASE</code> for Android 4.3 are:</p>
 <ul>
 <li>4.3</li>
+<li>4.3.1</li>
 </ul>
diff --git a/src/compatibility/4.4/android-4.4-cdd.pdf b/src/compatibility/4.4/android-4.4-cdd.pdf
new file mode 100644
index 0000000..730f634
--- /dev/null
+++ b/src/compatibility/4.4/android-4.4-cdd.pdf
Binary files differ
diff --git a/src/compatibility/4.4/versions.jd b/src/compatibility/4.4/versions.jd
new file mode 100644
index 0000000..d2118df
--- /dev/null
+++ b/src/compatibility/4.4/versions.jd
@@ -0,0 +1,19 @@
+page.title=Permitted Version Strings for Android 4.4
+@jd:body
+
+<p>As described in Section 3.2.2 of the <a
+href="/compatibility/android-4.4-cdd.pdf">Android 4.4 Compatibility Definition</a>, 
+only certain strings are allowable for the system property
+<code>android.os.Build.VERSION.RELEASE</code>. The reason for this is that
+applications and web sites may rely on predictable values for this string, and
+so that end users can easily and reliably identify the version of Android
+running on their devices.</p>
+<p>Because subsequent releases of the Android software may revise this string,
+but not change any API behavior, such releases may not be accompanied by a new
+Compatibility Definition Document. This page lists the versions that are
+allowable by an Android 4.3-based system. The only permitted values for
+<code>android.os.Build.VERSION.RELEASE</code> for Android 4.4 are:</p>
+<ul>
+<li>4.4</li>
+<li>4.4.1</li>
+</ul>
diff --git a/src/compatibility/android-4.4-cdd.pdf b/src/compatibility/android-4.4-cdd.pdf
new file mode 100644
index 0000000..730f634
--- /dev/null
+++ b/src/compatibility/android-4.4-cdd.pdf
Binary files differ
diff --git a/src/compatibility/android-cdd.pdf b/src/compatibility/android-cdd.pdf
index 10af204..730f634 100644
--- a/src/compatibility/android-cdd.pdf
+++ b/src/compatibility/android-cdd.pdf
Binary files differ
diff --git a/src/compatibility/compatibility_toc.cs b/src/compatibility/compatibility_toc.cs
index 86f5cef..6d4b69e 100644
--- a/src/compatibility/compatibility_toc.cs
+++ b/src/compatibility/compatibility_toc.cs
@@ -26,7 +26,7 @@
       <li><a href="<?cs var:toroot ?>compatibility/overview.html">Overview</a></li>
       <li><a href="<?cs var:toroot ?>compatibility/cts-intro.html">Compatibility Test Suite</a></li>
       <li><a href="<?cs var:toroot ?>compatibility/cts-development.html">CTS Development</a></li>
-      <li><a href="<?cs var:toroot ?>compatibility/android-4.3-cdd.pdf">Compatibility Definition Document (CDD)</a></li>
+      <li><a href="<?cs var:toroot ?>compatibility/android-cdd.pdf">Compatibility Definition Document (CDD)</a></li>
       <li><a href="<?cs var:toroot ?>compatibility/downloads.html">Downloads</a></li>
       <li><a href="<?cs var:toroot ?>compatibility/contact-us.html">Contact Us</a></li>
     </ul>
diff --git a/src/compatibility/downloads.jd b/src/compatibility/downloads.jd
index d3cedc6..8d1cbbd 100644
--- a/src/compatibility/downloads.jd
+++ b/src/compatibility/downloads.jd
@@ -25,6 +25,8 @@
 KitKat. Source code for Android 4.4 is found in the
 'android-cts-4.4_r1' branch in the open-source tree.</p>
 <ul>
+<li><a href="4.4/android-4.4-cdd.pdf">Android 4.4 Compatibility Definition
+Document (CDD)</a></li>
 <li><a
 href="https://dl.google.com/dl/android/cts/android-cts-4.4_r1-linux_x86-arm.zip">Android
 4.4 R1 Compatibility Test Suite (CTS)</a></li>
diff --git a/src/compatibility/overview.jd b/src/compatibility/overview.jd
index e09d583..62c2083 100644
--- a/src/compatibility/overview.jd
+++ b/src/compatibility/overview.jd
@@ -99,7 +99,7 @@
 <p>If you want to build a device compatible with a given Android version,
 start by checking out the source code for that version, and then read the
 corresponding CDD and stay within its guidelines. For additional details,
-simply examine <a href="/compatibility/android-4.3-cdd.pdf">the latest CDD</a>.</p>
+simply examine <a href="/compatibility/android-cdd.pdf">the latest CDD</a>.</p>
 <h1 id="compatibility-test-suite-cts">Compatibility Test Suite (CTS)</h1>
 <p>The CTS is a free, commercial-grade test suite, available for
 <a href="downloads.html">download</a>.