diff --git a/libcxx/docs/ReleaseNotes.rst b/libcxx/docs/ReleaseNotes.rst
--- a/libcxx/docs/ReleaseNotes.rst
+++ b/libcxx/docs/ReleaseNotes.rst
@@ -1,6 +1,6 @@
-=========================================
-Libc++ |version| |In Progress|Release Notes
-=========================================
+================================================
+Libc++ |version| |InProgressTitle| Release Notes
+================================================
 
 .. contents::
    :local:
@@ -10,7 +10,7 @@
 
 .. warning::
 
-   These are in-progress notes for the upcoming libc++ 14 release.
+   These are |InProgress| notes for the upcoming libc++ |version_major| release.
    Release notes for previous releases can be found on
    `the Download Page <https://releases.llvm.org/download.html>`_.
 
@@ -18,7 +18,7 @@
 ============
 
 This document contains the release notes for the libc++ C++ Standard Library,
-part of the LLVM Compiler Infrastructure, release 14.0.0. Here we describe the
+part of the LLVM Compiler Infrastructure, release |version|. Here we describe the
 status of libc++ in some detail, including major improvements from the previous
 release and new feature work. For the general LLVM release notes, see `the LLVM
 documentation <https://llvm.org/docs/ReleaseNotes.html>`_. All LLVM releases may
@@ -33,7 +33,7 @@
 see the `releases page <https://llvm.org/releases/>`_.
 
 What's New in Libc++ |version|?
-============================
+===============================
 
 New Features
 ------------
diff --git a/libcxx/docs/conf.py b/libcxx/docs/conf.py
--- a/libcxx/docs/conf.py
+++ b/libcxx/docs/conf.py
@@ -48,7 +48,8 @@
 # built documents.
 #
 # The short X.Y version.
-version = '14.0.0'
+version_major = '14'
+version = version_major + '.0.0'
 # The full version, including alpha/beta/rc tags.
 release = version + 'git'
 
@@ -86,12 +87,14 @@
 # A list of ignored prefixes for module index sorting.
 #modindex_common_prefix = []
 
-in_progress = "(In-Progress) " if version != release else ""
+in_progress_title = "(In-Progress) " if version != release else ""
+in_progress = 'in-progress' if version != release else ""
 
-rst_epilog = """
+rst_epilog = f"""
 .. |version| replace:: {version}
-.. |In Progress| replace:: {in_progress}
-
+.. |version_major| replace:: {version_major}
+.. |InProgressTitle| replace:: {in_progress_title}
+.. |InProgress| replace:: {in_progress}
 """
 
 # -- Options for HTML output ---------------------------------------------------