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@@ -239,6 +239,29 @@ Headless linux servers (identified by the DISPLAY env not being defined)
 will not select a GUI backend.
 
 
+Return type of ArtistInspector.get_aliases changed
+``````````````````````````````````````````````````
+
+`ArtistInspector.get_aliases` previously returned the set of aliases as
+``{fullname: {alias1: None, alias2: None, ...}}``.  The dict-to-None mapping
+was used to simulate a set in earlier versions of Python.  It has now been
+replaced by a set, i.e. ``{fullname: {alias1, alias2, ...}}``.
+
+This value is also stored in `ArtistInspector.aliasd`, which has likewise
+changed.
+
+
+``:math:`` directive renamed to ``:mathmpl:``
+`````````````````````````````````````````````
+
+The ``:math:`` rst role provided by `matplotlib.sphinxext.mathmpl` has been
+renamed to ``:mathmpl:`` to avoid conflicting with the ``:math:`` role that
+Sphinx 1.8 provides by default.  (``:mathmpl:`` uses Matplotlib to render math
+expressions to images embedded in html, whereas Sphinx uses MathJax.)
+
+When using Sphinx<1.8, both names (``:math:`` and ``:mathmpl:``) remain
+available for backcompatibility.
+
 
 ==================
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