diff --git a/schema/cpacs_schema.xsd b/schema/cpacs_schema.xsd
index 535fe2a..5cb754a 100644
--- a/schema/cpacs_schema.xsd
+++ b/schema/cpacs_schema.xsd
@@ -361,6 +361,25 @@ daniel.boehnke@dlr.de
+
+ CPACS 2.3
+
+ Release in Nov 2015
+ CPACS 2.3 is the fourth public release of CPACS. Major changes include:
+
+ Included vector notation for weight and balance.
+ Included flight system and flight dynamic information.
+ Included top level aircraft requirements.
+ Included a prototype for detailed nacelle geometries.
+ Included structural mounts.
+ Extended aero data set for loads.
+ Extended the mass breakdown.
+ Updated the symmetry definition, please take a look at the documentation point 5 adn 6.
+ All issues for this release can be found online
+ https://github.com/DLR-boeh-da/CPACS/issues
+
+
+
CPACS 2.2.1