MicrosoftMicrosoftNow it seems be official that no changes are made with the march patches, but later this year so be prepared:
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV190023
"Recommended Actions
Windows Updates in March 2020 add new audit events, additional logging, and a remapping of Group Policy values that will enable hardening LDAP Channel Binding and LDAP Signing. The March 2020 updates do not make changes to LDAP signing or channel binding policies or their registry equivalent on new or existing domain controllers.
A further future monthly update, anticipated for release the second half of calendar year 2020, will enable LDAP signing and channel binding on domain controllers configured with default values for those settings.
Administrators can prevent the feature update from making those change either by enabling LDAP signing and channel binding NOW or by configuring non-default values prior to installing updates that enable LDAP signing and channel binding by default.
When the March 2020 Windows updates become available, customers will be notified via a revision to this advisory. If you wish to be notified when these update are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications. In the meantime, we strongly advise customers to take the following steps at the earliest opportunity:
Configure your systems to help make LDAP channel binding and LDAP signing on Active Directory Domain Controllers more secure.
Find and fix any application compatibility issues in the environment."
