diff --git a/docs/userguide/mpi_apps.rst b/docs/userguide/mpi_apps.rst
index 1bfeb6ce56..c86d1c320c 100644
--- a/docs/userguide/mpi_apps.rst
+++ b/docs/userguide/mpi_apps.rst
@@ -1,14 +1,6 @@
 MPI Apps
 ========
 
-.. note::
-
-    Parsl's support for MPI Apps described below is pending release.
-    Please use the ``mpi_experimental_3`` branch to use the functionality
-    described in this document. To install directly from github:
-
-    >>  pip install git+https://github.com/Parsl/parsl.git@mpi_experimental_3
-
 MPI applications run multiple copies of a program that complete a single task by
 coordinating using messages passed within or across nodes.
 Starting MPI application requires invoking a "launcher" code (e.g., ``mpiexec``) from one node
diff --git a/parsl/dataflow/dflow.py b/parsl/dataflow/dflow.py
index f45ac37629..e77c0da3eb 100644
--- a/parsl/dataflow/dflow.py
+++ b/parsl/dataflow/dflow.py
@@ -1143,8 +1143,9 @@ def add_executors(self, executors):
 
     def atexit_cleanup(self) -> None:
         if not self.cleanup_called:
-            logger.info("DFK cleanup because python process is exiting")
-            self.cleanup()
+            logger.warning("Python is exiting with a DFK still running. "
+                           "You should call parsl.dfk().cleanup() before "
+                           "exiting to release any resources")
         else:
             logger.info("python process is exiting, but DFK has already been cleaned up")