Adapt mentions of future changes in doc
diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst
index 33b39f2..1978547 100644
--- a/Doc/library/csv.rst
+++ b/Doc/library/csv.rst
@@ -40,7 +40,7 @@
    This version of the :mod:`csv` module doesn't support Unicode input.  Also,
    there are currently some issues regarding ASCII NUL characters.  Accordingly,
    all input should be UTF-8 or printable ASCII to be safe; see the examples in
-   section :ref:`csv-examples`. These restrictions will be removed in the future.
+   section :ref:`csv-examples`.
 
 
 .. seealso::
diff --git a/Doc/library/mailbox.rst b/Doc/library/mailbox.rst
index 54ade5a..a5d2aa0 100644
--- a/Doc/library/mailbox.rst
+++ b/Doc/library/mailbox.rst
@@ -1513,7 +1513,7 @@
 mailboxes, such as adding or removing message, and do not provide classes to
 represent format-specific message properties. For backward compatibility, the
 older mailbox classes are still available, but the newer classes should be used
-in preference to them.  The old classes will be removed in Python 3.
+in preference to them.  The old classes have been removed in Python 3.
 
 Older mailbox objects support only iteration and provide a single public method:
 
diff --git a/Doc/library/parser.rst b/Doc/library/parser.rst
index e2d4523..acda372 100644
--- a/Doc/library/parser.rst
+++ b/Doc/library/parser.rst
@@ -34,7 +34,7 @@
    replaced by "ast"; this is a legacy from the time when there was no other
    AST and has nothing to do with the AST found in Python 2.5.  This is also the
    reason for the functions' keyword arguments being called *ast*, not *st*.
-   The "ast" functions will be removed in Python 3.
+   The "ast" functions have been removed in Python 3.
 
 There are a few things to note about this module which are important to making
 use of the data structures created.  This is not a tutorial on editing the parse