Beginning August 11th, 2015, we will be upgrading Flash Player’s extended support release from version 13 to version 18. This change impacts enterprise and IT customers that currently deploy Flash Player using the extended support releases available through our distribution channel.
Adobe makes available the extended support release to organizations that prefer Flash Player stability over new functionality. We will create a branch of the Flash Player code that we keep up to date with all of the latest security updates, but none of the new features or bug fixes available in our normal release branch. This allows organizations to certify and stay secure with Flash Player with minimal effort.
To ensure a smooth transition, we encourage IT organizations to thoroughly test our version 18 releases (currently available on labs.adobe.com) over the next couple of months before deploying.