The Windows implementation of the `java.nio.channels.Selector` API has been replaced in this release to use a new more scalable implementation. No behavior or compatibility issues were observed during testing of the new implementation. The old implementation has not been removed and the JDK can be configured to use the old implementation, if needed, by running with `-Djava.nio.channels.spi.SelectorProvider=sun.nio.ch.WindowsSelectorProvider` on the command line.