############# Release Notes #############

4.2.1

Fixes

A new utility allows :doc:Backups </backups> of a cluster directly into another FoundationDB database. It is designed also to support asynchronous replication and disaster recovery.
A new version of the Java bindings <../javadoc-completable/index.html>_ adds support for Java 8 Completable Futures.
Information on the versions of connected clients has been added to :doc:Machine-Readable Status </mr-status>.
Information on the status of running backups has been added to :doc:Machine-Readable Status </mr-status>.

API version updated to 420. There are no behavior changes in this API version. See the :ref:API version upgrade guide <api-version-upgrade-guide-420> for upgrade details.