Added upgrading notes

docs/license.rst

@@ -1,21 +1,48 @@
 License
 =======
 
-Flask is licensed under a three clause `BSD License`_.  It basically
-means: do whatever you want with it as long as the copyright in Flask
-sticks around, the conditions are not modified and the disclaimer is
-present.  Furthermore you must not use the names of the authors to promote
-derivates of the software without written consent.
+Flask is licensed under a three clause BSD License.  It basically means:
+do whatever you want with it as long as the copyright in Flask sticks
+around, the conditions are not modified and the disclaimer is present.
+Furthermore you must not use the names of the authors to promote derivates
+of the software without written consent.
 
-.. _BSD License:
-   http://en.wikipedia.org/wiki/BSD_licenses#3-clause_license_.28.22New_BSD_License.22.29
+The full license text can be found below (:ref:`flask-license`).  For the
+documentation and artwork different licenses apply.
+
+.. _authors:
 
 Authors
 -------
 
 .. include:: ../AUTHORS
 
-License Text
-------------
+General License Definitions
+---------------------------
+
+The following section contains the full license texts for Flask and the
+documentation.
+
+-   "AUTHORS" hereby refers to all the authors listed in the
+    :ref:`authors` section.
+
+-   The ":ref:`flask-license`" applies to all the sourcecode shipped as
+    part of Flask (Flask itself as well as the examples and the unittests)
+    as well as documentation.
+
+-   The ":ref:`artwork-license`" applies to the project's Horn-Logo.
+
+.. _flask-license:
+
+Flask License
+-------------
 
 .. include:: ../LICENSE
+
+
+.. _artwork-license:
+
+Flask Artwork License
+---------------------
+
+.. include:: ../artwork/LICENSE