diff --git a/ChangeLog b/ChangeLog
index 82ddc46..6f83070 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,9 @@
-2015-12-02  Juergen Knoedlseder  <jurgen.knodlseder@irap.omp.eu>
+2015-12-11  Juergen Knoedlseder  <jurgen.knodlseder@irap.omp.eu>
 
         * Version 1.0.0 released
         =========================
 
+        Add GFilename class (#1599)
         Check existence of files in CTA response loading (#1586)
         GSkyMap::__getitem__ throw exception if out of bound (#1581)
         Handle ~ in filenames (#1580)
diff --git a/NEWS b/NEWS
index bbe716e..26bba50 100644
--- a/NEWS
+++ b/NEWS
@@ -2,7 +2,7 @@ New Features and Important Changes in GammaLib 1.0.0
 
 Author(s) : Juergen Knoedlseder
 
-2 December 2015
+11 December 2015
 
 
 1. Introduction
@@ -89,6 +89,10 @@ This is required on some platforms to properly catch the end in iterations (#158
 The gammalib::expand_env() function now handles ~, ~user, ~+ and ~- following the
 logic implemented for the bash shell.
 
+The GFilename class has been added to deal with filenames in the future. This class
+handles the decomposition of the string into a filename and an extension name in the
+cfitsio style, allowing to specify the extension name, number and version.
+
 
 14. XML module
 --------------