diff --git a/doc/install-guide/source/index.rst b/doc/install-guide/source/index.rst
index 0f6b4a5198..3f7ceb6d71 100644
--- a/doc/install-guide/source/index.rst
+++ b/doc/install-guide/source/index.rst
@@ -68,9 +68,12 @@ are included.
 
 This guide documents OpenStack Liberty release.
 
-.. warning:: This guide is a work-in-progress and changing rapidly
-   while we continue to test and enhance the guidance. Please note
-   where there are open "to do" items and help where you are able.
+.. warning::
+
+   This guide is a work-in-progress and is subject to frequent updates.
+   Pre-release packages have been used for testing, and some instructions
+   might not work with final versions. Please help us make this guide better
+   by reporting any errors you encounter.
 
 Contents
 ~~~~~~~~