diff --git a/source/compatibility.txt b/source/compatibility.txt
index c73aae5..771bb05 100644
--- a/source/compatibility.txt
+++ b/source/compatibility.txt
@@ -55,7 +55,8 @@ toolchains that are supported by the {+driver-short+}.
 Operating Systems
 ~~~~~~~~~~~~~~~~~
 
-The following operating systems are continually tested with the {+driver-short+}:
+The following operating systems are expected to be supported for use
+with the {+driver-short+}:
 
 .. list-table::
   :header-rows: 1
@@ -65,22 +66,25 @@ The following operating systems are continually tested with the {+driver-short+}
     - Notes
 
   * - Debian
-    - Versions 9.2, 10.0, and 11.0
+    - Versions 11.0 and later
+
   * - RHEL
-    - Versions 7.0, 7.1, 8.1, 8.2, and 8.3. RHEL derivatives
-      (for example, CentOS, Rocky Linux, or AlmaLinux) of the same release version are
-      supported. Fedora is also supported, but not continually tested.
+    - Versions 7.0 and later. RHEL derivatives (such as CentOS,
+      Rocky Linux, and AlmaLinux) of the same release version are
+      supported. Fedora is also supported.
+
   * - Ubuntu
-    - Versions 16.04, 18.04, and 20.04. Subsequent minor releases
-      are also supported. Ubuntu 22.04 and newer is not yet tested. Ubuntu
-      derivatives based on supported Ubuntu versions are also supported.
+    - Versions 20.04 and later. Ubuntu derivatives based on supported
+      Ubuntu versions are also supported.
+
   * - Arch Linux
     -
+
   * - macOS
-    - Version 11.0
-  * - Windows Server 2008 and Windows Server 2016
-    - Windows variants of the same generation are supported
+    - Versions 11.0 and later
 
+  * - Windows
+    - Windows Server 2008 and later
 
 Compilers
 ~~~~~~~~~
@@ -93,12 +97,15 @@ The following compilers are continually tested with the {+driver-short+}:
 
   * - Compiler
     - Notes
+
   * - Clang
     - Versions 3.7, 3.8, and 6.0. Newer versions
       are also supported, as well as the corresponding Apple Clang releases.
+
   * - GNU Compiler Collection (GCC)
     - Versions 4.8, 5.4, 6.3, 7.5, 8.2, 8.3,
       9.4, and 10.2. The MinGW-w64 GCC is also tested and supported.
+
   * - Microsoft Visual C++ (MSVC)
     - Tested with MSVC 14.x (Visual Studio 2015) and 15.x (Visual Studio
       2017). Newer MSVC versions are supported but not yet tested.
@@ -138,4 +145,4 @@ problem, or open a `GitHub Pull Request <https://github.com/mongodb/mongo-c-driv
    Simple pull requests to fix unsupported platforms are welcome, but will be
    considered on a case-by-case basis. The acceptance of a pull request to fix the
    libraries on an unsupported platform does not imply full support of that
-   platform.
\ No newline at end of file
+   platform.
diff --git a/source/upgrade.txt b/source/upgrade.txt
index 6aea7ef..82659a8 100644
--- a/source/upgrade.txt
+++ b/source/upgrade.txt
@@ -69,6 +69,27 @@ sections of this guide describe the breaking changes included in each library.
   address all breaking changes that are listed for versions 1.x up to and
   including version 2.0.0
 
+.. _c-version-2.1.0-breaking-changes:
+
+Version 2.1.0
+~~~~~~~~~~~~~
+
+{+libbson+} Breaking Changes
+````````````````````````````
+
+The 2.1.0 release of ``{+libbson+}`` includes the following breaking
+changes:
+
+- Removes support for Debian 9 and Debian 10.
+
+{+libmongoc+} Breaking Changes
+``````````````````````````````
+
+The 2.1.0 release of ``{+libmongoc+}`` includes the following breaking
+changes:
+
+- Removes support for Debian 9 and Debian 10.
+
 .. _c-version-2.0.0-breaking-changes:
 
 Version 2.0.0
diff --git a/source/whats-new.txt b/source/whats-new.txt
index edc7fb2..43ec0ab 100644
--- a/source/whats-new.txt
+++ b/source/whats-new.txt
@@ -26,6 +26,7 @@ and deprecations made in each version of the driver libraries.
 
 Learn what's new in:
 
+* :ref:`Version 2.1.0 <c-version-2.1.0>`
 * :ref:`Version 2.0.2 <c-version-2.0.2>`
 * :ref:`Version 2.0.1 <c-version-2.0.1>`
 * :ref:`Version 2.0.0 <c-version-2.0.0>`
@@ -46,6 +47,17 @@ Learn what's new in:
 
 .. _c-upcoming-breaking-changes:
 
+.. _c-version-2.1.0:
+
+What's New in 2.1.0
+-------------------
+
+.. warning:: Breaking Changes
+
+   {+driver-short+} v2.1.0 contains breaking changes. For more
+   information, see :ref:`c-version-2.1.0-breaking-changes` in the
+   Upgrade Driver Versions guide.
+
 .. _c-version-2.0.2:
 
 What's New in 2.0.2