Update docs for Python version support

docs/source/install/install.rst

@@ -1,8 +1,8 b''
-IPython requires Python 2.6, 2.7, or ≥ 3.2.
+IPython requires Python 2.7 or ≥ 3.3.
 
 .. note::
 
-    If you need to use Python 2.5, you can find an old version (≤0.10) of IPython
+    If you need to use Python 2.6 or 3.2, you can find IPython 1.0
     `here <http://archive.ipython.org/release/>`__.
 
 Quickstart

docs/source/overview.rst

@@ -273,10 +273,9 b' for parallel computing.'
 Portability and Python requirements
 -----------------------------------
 
-As of the 1.0 release, IPython works with Python 2.6, 2.7, 3.2 and 3.3.
-Version 0.12 introduced full support for Python 3. Version 0.11 worked with
-Python 2.6 and 2.7 only. Versions 0.9 and 0.10 worked with Python 2.4 and
-above (not including Python 3).
+As of the 2.0 release, IPython works with Python 2.7 and 3.3 or above.
+Version 1.0 additionally worked with Python 2.6 and 3.2.
+Version 0.12 was the first version to fully support Python 3.
 
 IPython is known to work on the following operating systems:
 

docs/source/whatsnew/development.rst

@@ -8,3 +8,5 b' This document describes in-flight development work.'
 Backwards incompatible changes
 ------------------------------
 
+* Python 2.6 and 3.2 are no longer supported: the minimum required
+  Python versions are now 2.7 and 3.3.