diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog
index ec2f70c18..4629123d9 100644
--- a/winsup/doc/ChangeLog
+++ b/winsup/doc/ChangeLog
@@ -1,3 +1,8 @@
+2009-10-31  Corinna Vinschen  <corinna@vinschen.de>
+
+	* new-features.sgml (ov-new1.7-misc): Add installation-specific
+	unique object names description.
+
 2009-10-28  Yaakov Selkowitz  <yselkowitz@users.sourceforge.net>
 
 	* pathnames.sgml: Add limitation of case sensitivity with CreateProcess.
diff --git a/winsup/doc/new-features.sgml b/winsup/doc/new-features.sgml
index f38db1a75..fea0fa8e6 100644
--- a/winsup/doc/new-features.sgml
+++ b/winsup/doc/new-features.sgml
@@ -325,6 +325,14 @@
   delete, to support the toolchain in implementing full C++ standards
   conformance when working with shared libraries.
 
+- Different Cygwin installations in different paths can be run in parallel
+  without knowing of each other.  The path of the Cygwin DLL used in a
+  process is a key used when creating IPC objects.  So different Cygwin
+  DLLs are running in different namespaces.
+
+- Each Cygwin DLL stores its path and installation key in the registry.
+  This allows troubleshooting of problems which could be a result of having
+  multiple concurrent Cygwin installations.
 </screen>
 
 </sect2>