adding soc opt updates to sentinel wn

Author: batamig

articles/sentinel/whats-new.md

@@ -30,6 +30,7 @@ Get notified when this page is updated by copying and pasting the following URL
 - [Threat intelligence upload API now supports more STIX objects](#threat-intelligence-upload-api-now-supports-more-stix-objects)
 - [Microsoft Defender Threat Intelligence data connectors now generally available (GA)](#microsoft-defender-threat-intelligence-data-connectors-now-generally-available-ga)
 - [Bicep template support for repositories (Preview)](#bicep-template-support-for-repositories-preview)
+- [SOC optimization updates for unified coverage management](#soc-optimization-updates-for-unified-coverage-management)
 - [View granular solution content in the Microsoft Sentinel content hub](#view-granular-solution-content-in-the-microsoft-sentinel-content-hub)
 
 ### Optimize threat intelligence feeds with ingestion rules
@@ -94,6 +95,23 @@ Use Bicep templates alongside or as a replacement of ARM JSON templates in Micro
 
 For more information, see [Plan your repository content](ci-cd-custom-content.md#plan-your-repository-content).
 
+
+### SOC optimization updates for unified coverage management
+
+In workspaces enabled for unified security operations, SOC optimizations now support both SIEM and XDR data, with detection coverage from across Microsoft Defender services. 
+
+In the Defender portal, the **SOC optimizations** and **MITRE ATT&CK** pages also now provide extra functionality for threat-based coverage optimizations to help you understand the impact of the recommendations on your environment and help you prioritize which to implement first.
+
+Enhancements include:
+
+|Area | Details|
+|-----|--------|
+|**SOC optimizations Overview page** | - A **High**, **Medium**, or **Low** score for your current detection coverage. This sort of scoring can help you decide which recommendations to prioritize at a glance. <br><br>- An indication of the number of active Microsoft Defender products (services) out of all available products. This helps you understand whether there's a whole product that you're missing in your environment. |
+| **Optimization details side pane**,<br> shown when you drill down to a specific optimization| - Detailed coverage analysis, including the number of user-defined detections, response actions, and products you have active. <br><br>- Detailed spider charts that show your coverage across different threat categories, for both user-defined and out-of-the-box detections. <br><br>- An option to jump to the specific threat scenario in the **MITRE ATT&CK** page instead of viewing MITRE ATT&CK coverage only in the side pane.<br><br>- An option to **View full threat scenario** to drill down to even further details about the security products and detections available to provide security coverage in your environment. |
+|**MITRE ATT&CK page** | - A new toggle to view coverage by threat scenario. If you've jumped to the **MITRE ATT&CK** page from either a recommendation details side pane or from the **View full threat scenario** page, the **MITRE ATT&CK** page is pre-filtered for your threat scenario. <br><br>- The technique details pane, shown on the side when you select a specific MITRE ATT&CK technique, now shows the number of active detections out of all available detections for that technique. |
+
+For more information, see [Optimize your security operations](soc-optimization/soc-optimization-access.md) and [Understand security coverage by the MITRE ATT&CK framework](mitre-coverage.md).
+
 ### View granular solution content in the Microsoft Sentinel content hub
 
 Now you can view the individual content available in a specific solution directly from the **Content hub**, even before you've installed the solution. This new visibility helps you understand the content available to you, and more easily identify, plan, and install the specific solutions you need.