Update documentation about python 3 support in Flask, resolves #1578

docs/advanced_foreword.rst

@@ -46,24 +46,10 @@ spam, links to malicious software, and the like.
 Flask is no different from any other framework in that you the developer must
 build with caution, watching for exploits when building to your requirements.
 
-The Status of Python 3
+Python 3 Support in Flask
 ----------------------
 
-Currently the Python community is in the process of improving libraries to
-support the new iteration of the Python programming language.  While the
-situation is greatly improving there are still some issues that make it
-hard for users to switch over to Python 3 just now.  These problems are
-partially caused by changes in the language that went unreviewed for too
-long, partially also because we have not quite worked out how the lower-
-level API should change to account for the Unicode differences in Python 3.
-
-We strongly recommend using Python 2.7 with activated Python 3
-warnings during development.  If you plan on upgrading to Python 3 in the
-near future we strongly recommend that you read `How to write forwards
-compatible Python code
-<http://lucumr.pocoo.org/2011/1/22/forwards-compatible-python/>`_.
-
-If you do want to dive into Python 3 already have a look at the
+If you think of using Flask with Python 3 have a look at the
 :ref:`python3-support` page.
 
 Continue to :ref:`installation` or the :ref:`quickstart`.