Add note

Doc/whatsnew/whatsnew25.tex

@@ -99,6 +99,20 @@ implemented by Richard Jones and Fred Drake.}
 \end{seealso}
 
 
+%======================================================================
+\section{PEP 342: New Generator Features}
+
+XXX write this section
+
+\begin{seealso}
+
+\seepep{342}{Coroutines via Enhanced Generators}{PEP written by 
+Guido van Rossum and Phillip J. Eby;
+implemented by Phillip J. Eby.}
+
+\end{seealso}
+
+
 %======================================================================
 \section{Other Language Changes}