diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 165f99d03e..ca246fd93d 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -83,7 +83,17 @@ New Features
 
     Library
     -------
-    - None
+    - New API calls that determine the search path for dataset external
+      storage.
+
+      H5Pset/get_efile_prefix() API calls were added to the library. These
+      functions give control over the search path for dataset external storage
+      that has been configured with H5Pset_external().
+
+      Additionally, the HDF5_EXTFILE_PREFIX environment variable can be
+      used to control the search path.
+
+      (DER, 2016/04/20, HDFFV-8740)
 
     Parallel Library
     ----------------