Re-added 1909 version info

windows/client-management/mdm/new-in-windows-mdm-enrollment-management.md

@@ -24,6 +24,7 @@ This topic provides information about what's new and breaking changes in Windows
 For details about Microsoft mobile device management protocols for Windows 10 see [\[MS-MDM\]: Mobile Device Management Protocol](https://go.microsoft.com/fwlink/p/?LinkId=619346) and [\[MS-MDE2\]: Mobile Device Enrollment Protocol Version 2]( http://go.microsoft.com/fwlink/p/?LinkId=619347). 
 
 - **What’s new in MDM for Windows 10 versions**
+  - [What’s new in MDM for Windows 10, version 1909](#whats-new-in-mdm-for-windows-10-version-1909)
   - [What’s new in MDM for Windows 10, version 1903](#whats-new-in-mdm-for-windows-10-version-1903)
   - [What’s new in MDM for Windows 10, version 1809](#whats-new-in-mdm-for-windows-10-version-1809)
   - [What’s new in MDM for Windows 10, version 1803](#whats-new-in-mdm-for-windows-10-version-1803)
@@ -83,6 +84,27 @@ For details about Microsoft mobile device management protocols for Windows 10 s
     - [September 2017](#september-2017)
     - [August 2017](#august-2017)
 
+## What’s new in MDM for Windows 10, version 1909
+<table class="mx-tdBreakAll">
+<colgroup>
+<col width="25%" />
+<col width="75%" />
+</colgroup>
+<thead>
+<tr class="header">
+<th>New or updated topic</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td style="vertical-align:top"><a href="bitlocker-csp.md" data-raw-source="[BitLocker CSP](bitlocker-csp.md)">BitLocker CSP</a></td>
+<td style="vertical-align:top"><br>Added the following new nodes in Windows 10, version 1909:</p>
+ConfigureRecoveryPasswordRotation, RotateRecoveryPasswords, RotateRecoveryPasswordsStatus, RotateRecoveryPasswordsRequestID.</li>
+</td></tr>
+</tbody>
+</table>
+
 ## What’s new in MDM for Windows 10, version 1903
 <table class="mx-tdBreakAll">
 <colgroup>