Amazon RDS now supports MySQL Minor Versions 5.5.57, 5.6.37 and 5.7.19

Amazon RDS for MySQL now supports MySQL Community Edition minor versions 5.5.57, 5.6.37 and 5.7.19 in all AWS Regions. These new versions include a number of fixes and functionality improvements for the MySQL database engine. 
Quelle: aws.amazon.com