On Tuesday June 21st from 10am to 6pm, we will be performing an upgrade of OpenStack, the underlying system powering DreamCompute, to the Mitaka release. Access to the APIs, the DreamCompute dashboard, and booting new instances will be temporarily inaccessible while the components are upgraded. However, during the upgrade, your existing instances will remain running and accessible.
For more information, be sure to follow the updates on the DreamHost Status blog or join us on IRC. The team will be in #DreamCompute on free node.
UPDATE: The US-East 2 cluster is now running the OpenStack Mitaka release.