Merge pull request #115669 from HeidiSteen/heidist-bugfix

[azure search] What's New entries for scoringStatistics

Author: PRMerger18

articles/search/whats-new.md

@@ -18,9 +18,13 @@ Learn what's new in the service. Bookmark this page to keep up to date with the
 
 ### May 2020 (Microsoft Build)
 
-+ Debug sessions feature is now in preview. [Sign up to request access](https://aka.ms/DebugSessions). Debug sessions provides a portal-based interface to investigate and resolve issues with a skillset. Fixes created in the debug session can be saved to production skillsets or downloaded for import to your source-controlled project.
++ [Debug sessions](cognitive-search-debug-session.md) feature is now in preview. [Sign up to request access](https://aka.ms/DebugSessions). Debug sessions provides a portal-based interface to investigate and resolve issues with a skillset. Fixes created in the debug session can be saved to production skillsets or downloaded for import to your source-controlled project. Get started with [this tutorial](cognitive-search-tutorial-debug-sessions.md).
 
-+ Security enhancements include the ability to [set up a private search endpoint (preview)](service-create-private-endpoint.md) that is inaccessible on the public internet. You can also [configure IP rules for inbound firewall support (preview)](service-configure-firewall.md).
++ Security enhancements include the ability to [set up a private search endpoint (preview)](service-create-private-endpoint.md) that is inaccessible on the public internet. You can also [configure IP rules for in-bound firewall support (preview)](service-configure-firewall.md).
+
++ Use a [system-managed identity (preview)](search-howto-managed-identities-data-sources.md) for read-only access to external Azure data sources during indexing.
+
++ Change the basis for how search scores are computed, from per-shard to all-shards, using the [scoringStatistics=global query parameter](index-similarity-and-scoring.md#scoring-statistics).
 
 ### March 2020