fixes #974 Point users at NNG.
diff --git a/README.md b/README.md
index 08a17f8..6530cf0 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,19 @@
 When using the .LIB on Windows, you will also need to link with the
 ws2_32, mswsock, and advapi32 libraries, as nanomsg depends on them.
 
+Support
+-------
+
+This library is considered to be in "sustaining" mode, which means that new
+feature development has ended, and bug fixes are made only when strictly
+necessary for severe issues.
+
+New development is now occuring in the [NNG](https://github.com/nanomsg/nng)
+project, which offers both protocol and API compatibility with this project.
+Please consider using NNG for new projects.
+
+Please see the file SUPPORT for more details.
+
 Resources
 ---------
 
diff --git a/SUPPORT b/SUPPORT
new file mode 100644
index 0000000..b3415ac
--- /dev/null
+++ b/SUPPORT
@@ -0,0 +1,23 @@
+SUPPORT
+=======
+
+This project ("nanomsg") or more properly "nanomsg 1.0" is now in
+"sustaining" mode.
+
+This means that generally the project maintainers will only integrate fixes
+or release new versions when severe defects are found.  The  reason for this
+is that new development effort has transitioned to the "NNG" project
+(see https://github.com/nanomsg/nng for more information).
+
+The possible exception to this would be for features with a specific
+commercial sponsorship, for commercial users unable to use NNG.
+
+The NNG project as of this writing has *nearly* complete compatibility
+with nanomsg (99% of apps will work with no source code changes, and
+the NNG library is also wire compatible with nanomsg, so that projects
+built with the two separate libraries can interoperate seamlessly).
+In addition it offers higher scalability, reliability, and usability.
+It also offers a number of more advanced features.
+
+Commercial support for both NNG and this project ("nanomsg") is offered
+by Staysail Systems, Inc.  Contact info@staysail.tech for more information.