fixing toc

Author: MashaMSFT

articles/azure-sql/database/doc-changes-updates-release-notes.md

@@ -17,6 +17,17 @@ ms.author: sstein
 
 This article lists Azure SQL Database and Azure SQL Managed Instance features that are currently in public preview. For SQL Database and SQL Managed Instance updates and improvements, see [SQL Database & SQL Managed Instance service updates](https://azure.microsoft.com/updates/?product=sql-database). For updates and improvements to other Azure services, see [Service updates](https://azure.microsoft.com/updates).
 
+# What's new?
+
+Documentation for Azure SQL Database and Azure SQL Managed Instance has been split into separate sections. We've also updated how we refer to a managed instance from *Azure SQL Database managed instance* to *Azure SQL Managed Instance*.
+
+We've done this because some features and functionality vary greatly between a single database and managed instance, and it's become increasingly more of a challenge to explain complex nuances between Azure SQL Database and Azure SQL Managed Instance in individual 'shared' articles.
+
+This clarification between the different Azure SQL products should simplify and streamline the process of working with SQL in Azure, whether that be a single managed database in Azure SQL Database, a fully-fledged managed instance hosting multiple databases in Azure SQL Managed Instance, or the familiar on-premises SQL Server product but hosted on a virtual machine in Azure.
+
+Consider that this is a work in progress and not every document has been updated yet. For example, Transact-SQL (T-SQL) statements, stored procedures, and many features shared between Azure SQL Database and Azure SQL Managed Instance are not yet complete, so please bear with us!
+
+
 ## Features in public preview
 
 ### [Azure SQL Database](#tab/single-database)

articles/azure-sql/toc.yml

@@ -6,14 +6,14 @@
 
 - name: Shared SQL DB & SQL MI docs 
   items:
-  - name: Azure Hybrid Benefit
-    href: azure-hybrid-benefit.md
   - name: Purchasing models
     items:
     - name: Overview
       href: database/purchasing-models.md
     - name: vCore model overview
       href: database/service-tiers-vcore.md
+    - name: Azure Hybrid Benefit
+      href: azure-hybrid-benefit.md
     - name: Reserved capacity
       href: database/reserved-capacity-overview.md
   - name: Compute & storage
@@ -24,14 +24,14 @@
     - name: General purpose / Standard
       href: database/service-tier-general-purpose.md
     - name: Business critical / Premium
-      href: database/service-tier-business-critical.md        
+      href: database/service-tier-business-critical.md
 
   - name: Shared concepts 
     itemS: 
     - name: Feature comparison
       href: database/features-comparison.md
     - name: Multi-model features
-      href: multi-model-features.md      
+      href: multi-model-features.md
 
     - name: In-memory OLTP
       href: in-memory-oltp-overview.md
@@ -670,11 +670,6 @@
           - name: ETL for analytics
             href: database/saas-multitenantdb-tenant-analytics.md
 
-
-
-    - name: Load and move data
-      items:
-
   - name: Samples
     items:
     - name: Azure CLI