diff --git a/windows/security/threat-protection/microsoft-defender-atp/whats-new-in-microsoft-defender-atp.md b/windows/security/threat-protection/microsoft-defender-atp/whats-new-in-microsoft-defender-atp.md
index 73d6f92070..4ca54961c2 100644
--- a/windows/security/threat-protection/microsoft-defender-atp/whats-new-in-microsoft-defender-atp.md
+++ b/windows/security/threat-protection/microsoft-defender-atp/whats-new-in-microsoft-defender-atp.md
@@ -27,7 +27,7 @@ The following features are generally available (GA) in the latest release of Mic
 
 For more information preview features, see [Preview features](https://docs.microsoft.com/windows/security/threat-protection/windows-defender-atp/preview-windows-defender-advanced-threat-protection).
 
-## November 2019
+## November-December 2019
 
 - [Microsoft Defender ATP for Mac](microsoft-defender-atp-mac.md) <BR> Microsoft Defender ATP for Mac brings the next-generation protection to Mac devices. Core components of the unified endpoint security platform will now be available for Mac devices, including [endpoint detection and response](endpoint-detection-response-mac-preview.md).