1.    Amazon RDS SQL Server Supports differential and log and restores: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-for-sql-server-now-supports-differential-restores-and-log-restores/ 
2.    Amazon RDS SQL Server now supports logs to cloudwatch: https://aws.amazon.com/about-aws/whats-new/2019/11/now-publish-log-files-amazon-rds-sql-server-amazon-cloudwatch/ 
3.    Amazon RDS SQL Server now supports high availability in more regions (BJS, ARN, HKG, and BAH): https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-for-sql-server-adds-high-availability-support-in-additional-aws-regions/ 
4.    Amazon RDS SQL Server S3 file transfers allowing for Bulk insert to work on Single AZ instances (multi-az support in Q1 020): https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/User.SQLServer.Options.S3-integration.html 
5.    Amazon RDS SQL Server supports outbound network access (cross vpc linked servers now supported):https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-sql-server-supports-outbound-network-access/ 
6.    Amazon RDS SQL Server now supports X1e and X1 instances: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-for-sql-server-now-supports-x1-and-x1e-instance-types/ 
7.    Amazon RDS SQL Server now supports R5s and T3s: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-for-sql-server-now-supports-r5-and-t3-instance-types/ 
8.    Amazon RDS SQL Server now supports 8xl and 16xl for nitro instances: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-for-sql-server-now-supports-additional-instance-sizes/
9.     Amazon RDS now supports Storage Auto Scaling: https://aws.amazon.com/about-aws/whats-new/2019/06/rds-storage-auto-scaling/
10.  Amazon RDS for SQL Server now supports additional instance sizes: https://aws.amazon.com/about-aws/whats-new/2019/06/rds-storage-auto-scaling/
11.  Amazon RDS Performance Insights Supports Counter Metrics on Amazon RDS for SQL Server: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-rds-performance-insights-supports-counter-metrics-on-amazon-rds-for-sql-server/
12.  Amazon RDS SQL Server now supports changing the server-level collation: https://aws.amazon.com/about-aws/whats-new/2019/08/amazon-rds-sql-server-supports-changing-server-level-collation/
13.  Amazon RDS for SQL Server now Supports Multi-File Native Restores: https://aws.amazon.com/about-aws/whats-new/2019/06/amazon-rds-for-sql-server-now-supports-multi-file-native-restores/
14.  Amazon RDS for SQL Server now Supports SQL Server Audit: https://aws.amazon.com/about-aws/whats-new/2019/05/amazon-rds-for-sql-server-supports-sql-server-audit/
15.  Amazon RDS for SQL Server Now Supports Always On Availability Groups for SQL Server 2017: https://aws.amazon.com/about-aws/whats-new/2019/05/amazon-rds-for-sql-server-now-supports-always-on-availability-groups-for-sql-server-2017/
16.  Amazon RDS for SQL Server Increases the Database Limit Per Database Instance up to 100: https://aws.amazon.com/about-aws/whats-new/2019/05/amazon_rds_for_sql_server_increases/
17.  Performance Insights is Generally Available on Amazon RDS for SQL Server: https://aws.amazon.com/about-aws/whats-new/2019/03/performance-insights-is-generally-available-for-sql-server/