Update release-notes/elastic-security/index.md

Co-authored-by: Gabriel Landau <[email protected]>

Author: nastasha-solomon

release-notes/elastic-security/index.md

@@ -31,6 +31,9 @@ To check for security updates, go to [Security announcements for the Elastic sta
 
 ### Features and enhancements [elastic-security-9.1.2-features-enhancements]
 * Adds Automatic Import documentation links for users in log description and the error message so that users have better access to the data types that are valid [#229375]({{kib-pull}}229375).
+* To help identify which parts of `elastic-endpoint.exe` are using a significant amount of CPU, {elastic-defend} on Windows can now include CPU profiling data in diagnostics. To request CPU profiling data using the command line, refer to {fleet-guide}/elastic-agent-cmd-options.html#_options[{agent} command reference]. To request CPU profiling data using {kib}, check the **Collect additional CPU metrics** box when requesting {agent} diagnostics.
+* Improves {elastic-defend} malware scan queue efficiency on Windows by not blocking scan requests when an oplock for the file being scanned cannot be acquired.
+* Allows {elastic-defend} to automatically recover in some situations when it loses connectivity with {agent}.
 
 ### Fixes [elastic-security-9.1.2-fixes]
 * Fixes index syncing in non-default spaces [#230420]({{kib-pull}}230420).