Add release info to ChangeLog
diff --git a/ChangeLog b/ChangeLog
index 28467be..929de0b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,6 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
-= mbed TLS 2.7.X branch released XXXX-XX-XX
+= mbed TLS 2.7.14 branch released 2020-02-20
 
 Security
    * To avoid a side channel vulnerability when parsing an RSA private key,