diff --git a/CHANGELOG b/CHANGELOG
index fece840dbae27986b90a6dee6bcd08777517f597..566cec5b70b66cec6997e5a07e167a8236cfac1c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,22 @@
+Differences Between DuMuX 2.2 and DuMuX 2.3
+===================================================
+
+* IMPROVEMENTS and ENHANCEMENTS:
+
+* IMMEDIATE INTERFACE CHANGES not allowing a deprecation period:
+    
+* Deprecated CLASSES/FILES, to be removed after 2.3:
+
+* Deprecated PROPERTY NAMES, to be removed after 2.3: BEWARE: The compiler will not 
+  print any warning if a deprecated property name is used.
+
+* Deprecated CONSTANTS/ENUMS, to be removed after 2.3: BEWARE: The compiler will not 
+  print any warning if a deprecated constant/enum is used.
+  
+* DELETED member functions, which have been deprecated in DuMuX 2.3:
+  - DUMUX_DEPRECATED_MSG and DUMUX_UNUSED have been removed.
+
+
 Differences Between DuMuX 2.1 and DuMuX 2.2
 ===================================================