How to upgrade AWS RDS Aurora MySQL 5.6 to 5.7 : <p>We are using AWS RDS Aurora MySQL 5.6 for our production database. 
AWS launched MySQL 5.7 compatible Aurora engine on 6th Feb, 2018.</p>

<p>I dont see any option in "modify instance" to change engine to MySQL 5.7
I dont see any option in restore snapshot to database with MySQL 5.7 either.</p>

<p>We want to do this upgrade with least downtime. Pls suggest what could be done here.</p>
