add blog link

Author: austinmccollum

articles/sentinel/whats-new.md

@@ -35,7 +35,7 @@ Get notified when this page is updated by copying and pasting the following URL
 
 ### Optimize threat intelligence feeds with ingestion rules
 
-Optimize threat intelligence feeds by filtering and enhancing objects before they're delivered to your workspace. Ingestion rules update threat intel object attributes, or filter objects out all together.
+Optimize threat intelligence feeds by filtering and enhancing objects before they're delivered to your workspace. Ingestion rules update threat intel object attributes, or filter objects out all together. Check out the blog announcement [here](https://techcommunity.microsoft.com/blog/microsoftsentinelblog/introducing-threat-intelligence-ingestion-rules/4379019)!
 
 For more information, see [Understand threat intelligence ingestion rules](understand-threat-intelligence.md#configure-ingestion-rules).