Added versionchanged notices for optional 'delay' parameter to file handler classes.
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 06f4ea9..2030d98 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -1627,6 +1627,8 @@
    with that encoding.  If *delay* is true, then file opening is deferred until the
    first call to :meth:`emit`. By default, the file grows indefinitely.
 
+   .. versionchanged:: 2.6
+      *delay* was added.
 
    .. method:: close()
 
@@ -1696,6 +1698,9 @@
    with that encoding.  If *delay* is true, then file opening is deferred until the
    first call to :meth:`emit`.  By default, the file grows indefinitely.
 
+   .. versionchanged:: 2.6
+      *delay* was added.
+
 
    .. method:: emit(record)
 
@@ -1733,6 +1738,8 @@
    :file:`app.log.1`, :file:`app.log.2`, etc.  exist, then they are renamed to
    :file:`app.log.2`, :file:`app.log.3` etc.  respectively.
 
+   .. versionchanged:: 2.6
+      *delay* was added.
 
    .. method:: doRollover()
 
@@ -1792,6 +1799,11 @@
    one is deleted. The deletion logic uses the interval to determine which
    files to delete, so changing the interval may leave old files lying around.
 
+   If *delay* is true, then file opening is deferred until the first call to
+   :meth:`emit`.
+
+   .. versionchanged:: 2.6
+      *delay* was added.
 
    .. method:: doRollover()