-If you upgrade from version 0.12.0 or 1.0.x, you shouldn't have
-any problems. Just run "make install", and it will automatically
-update the necessary files, provided that you install LyX the
-same place as an existing version.
+If you upgrade from version 1.1.6 or 1.1.5, you shouldn't have any
+problems. It is nevertheless a good idea to advise all users to run
+Edit>Reconfigure.
+
+If you have your own layout files, you may need to update them a little:
+
+- all layout files should have a "DefaultStyle" entry
+
+- the "Latex" font style does not exist anymore. If you really need
+ its functionality, consider using the "PassThru" keyword instead.
+
+The new layout format keywords are described in the Customization
+manual.