diff --git a/NEWS b/NEWS
index 40e998684..e5704b212 100644
--- a/NEWS
+++ b/NEWS
@@ -20,6 +20,8 @@ debugging evaluator gives better error messages.
 
 * Changes to Scheme functions and syntax
 
+** New function 'unsetenv'.
+
 ** There is support for Infinity and NaNs.
 
 Following PLT Scheme, Guile can now work with infinite numbers, and
@@ -45,6 +47,9 @@ For example
     (/ 0)
     ERROR: Numerical overflow
 
+Two new predicates 'inf?' and 'nan?' can be used to test for the
+special values.
+
 ** We now have uninterned symbols.
 
 The new function 'make-symbol' will return a uninterned symbol.  This