first draft

Author: mongoKart

source/fundamentals/authentication.txt

@@ -74,13 +74,6 @@ authentication mechanisms, depending on which MongoDB versions your server suppo
 
 - ``SCRAM-SHA-256``
 - ``SCRAM-SHA-1``
-- ``MONGODB-CR``
-
-.. note::
-
-   MongoDB version 4.0 uses SCRAM as the default mechanism, and no longer
-   supports ``MONGODB-CR``.
-
 
 Select the :guilabel:`Connection String` or :guilabel:`MongoCredential` tab to
 see the corresponding syntax for specifying the default authentication mechanism:

source/upgrade.txt

@@ -17,7 +17,6 @@ Upgrade Driver Versions
    :depth: 1
    :class: singlecol
 
-
 Overview
 --------
 
@@ -57,6 +56,16 @@ changes between the current and upgrade versions. For example, if you
 are upgrading the driver from v2.0 to v2.20, address all breaking changes from
 the version after v2.0 including any listed under v2.20.
 
+.. _csharp-breaking-changes-3.0:
+
+Version 3.0 Potential Breaking Change
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- This version of the driver removes support for the
+  ``MONGODB-CR`` authentication mechanism. To learn more about
+  configuring authentication in the {+driver-short+}, see
+  :ref:`Authentication Mechanisms. <csharp-authentication-default>`
+
 .. _csharp-breaking-changes-2.28.0:
 
 Version 2.28.0 Potential Breaking Change
@@ -174,6 +183,13 @@ To learn more about the compatibility between .NET/C# driver versions
 and {+mdb-server+} versions, visit the
 :ref:`Compatibility <csharp-compatibility-tables>` page.
 
+Version 3.0 Release Support Changes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The v3.0 driver drops support for {+mdb-server+} v3.6 and earlier. To
+use driver v3.0 or later, your {+mdb-server+} must be v4.0 or
+later.
+
 Version 2.14 Release Support Changes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -182,4 +198,4 @@ use any driver from v2.14 and later, your {+mdb-server+} must be v3.6 or
 later.
 
 To learn how to upgrade your {+mdb-server+} deployment, see
-:manual:`Release Notes </release-notes/>` in the {+mdb-server+} manual.
+:manual:`Release Notes </release-notes/>` in the {+mdb-server+} manual.

source/whats-new.txt

@@ -15,7 +15,7 @@ What's New
    :values: reference
 
 .. meta::
-   :keywords: update, new feature, deprecation, upgrade, driver v2.19, driver v2.20, driver v2.21, driver v2.22, driver v2.23, driver v2.24, driver v2.25, driver v2.26
+   :keywords: update, new feature, deprecation, upgrade, driver v2.19, driver v2.20, driver v2.21, driver v2.22, driver v2.23, driver v2.24, driver v2.25, driver v2.26, driver v2.27, driver v2.28, driver v3.0
 
 Learn what's new in: