On Monday, April 20th, our cloud engineering team will be upgrading OpenStack, the underlying software powering DreamCompute, to the Juno 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 freenode.
UPDATE: The team finished the upgrade to OpenStack Juno. Let us know if you experience any issues.