diff --git a/libwvdrmengine/README b/libwvdrmengine/README
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+This is the source code for the Widevine Content Decryption Module (CDM) for the
+Android OS.  It provides the libwvdrmengine plugin for DRM.
+
+Partners who are integrating a device should be familiar with the documents in
+the docs directory.
+
+This source code is NOT open source, and is not part of AOSP.  However, it is
+released to partners external to Google after official Android releases.  For
+this reason, partners should look for bug fixes and software updates on the
+widevine branches:
+
++------------------------------+------------------------------+
+|Android Version               |Branch                        |
++------------------------------+------------------------------+
+|Android L                     |lmp-mr1-widevine-release      |
++------------------------------+------------------------------+
+|Android M MR1                 |mnc-mr1-widevine-release      |
++------------------------------+------------------------------+
+|Android N MR2                 |nyc-mr2-widevine-release      |
++------------------------------+------------------------------+
+|Android OC                    |oc-widevine-release           |
++------------------------------+------------------------------+
+|Android OC MR1                |oc-mr1-widevine-release       |
++------------------------------+------------------------------+
+|Android Pi                    |pi-widevine-release           |
++------------------------------+------------------------------+