diff -r 7f699568a877 -r 37f887b55e7f NEWS
--- a/NEWS	Fri Apr 17 15:14:06 2009 +0200
+++ b/NEWS	Fri Apr 17 15:57:26 2009 +0200
@@ -9,6 +9,9 @@
 theorems zdiv_zmult_zmult1, zdiv_zmult_zmult1_if, zdiv_zmult_zmult1 and zdiv_zmult_zmult2.
 div_mult_mult1 is now [simp] by default.  INCOMPATIBILITY.
 
+* Power operation on relations and functions is now a dedicated overloaded constant
+funpower with infix syntax "^^".  INCOMPATIBILITY.
+
 New in Isabelle2009 (April 2009)
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