added a description of the new features in Ediff

etc/NEWS

@@ -377,6 +377,19 @@ were changed.
 ** On terminals whose erase-char is ^H (Backspace), Emacs
 now uses normal-erase-is-backspace-mode.
 
+** EDiff changes.
+
+***  When comparing directories.
+Typing D brings up a buffer that lists the differences between the contents of
+directories. Now it is possible to use this buffer to copy the missing files
+from one directory to another.
+
+*** When comparing files or buffers.
+Typing the = key now offers to perform the word-by-word comparison of the
+currently highlighted regions in an inferior Ediff session. If you answer 'n'
+then it reverts to the old behavior and asks the user to select regions for
+comparison.
+
 ** Etags changes.
 
 *** In Prolog, etags creates tags for rules in addition to predicates.