There are references to the JCP option to use 'next generation plugin' in the install guides and online documentation:

http://www.java.com/en/download/help/new_plugin.xml
https://docs.oracle.com/javase/8/docs/technotes/guides/install/windows_jre_install.html

As per Marty, these options have been removed. The docs should be updated to reflect the deprecated functionality.