You can now choose to possess your AWS Elastic Beanstalk environments automatically update to the latest version of the underlying platform running your application during a specified maintenance window. Elastic Beanstalk regularly releases new versions of supported platforms (i.e.,Java, PHP, or Ruby,Node.js, Python, and .
NET,proceed, and Docker) with operating system, and web & application server,and language & framework updates. Previously, you had to manually initiate updates to your Elastic Beanstalk environments using the Elastic Beanstalk console, and command line interface (CLI),or API. Now, you can simply select a weekly maintenance window and possess Elastic Beanstalk automatically update the platform version of your environment during that window.
Source: amazon.com