The April 2014 Guest OS release (versions 4.7, 3.14, 2.26, and 1.34), which incorporates all the latest MSRC updates, started release on May 2 and completed today (May 6). More information is available on the
Guest OS Matrix page. Cloud service roles on automatic update will reboot once each to upgrade to the latest Guest OS.
Guest OS updates only apply to Cloud Services. They do not apply to IaaS Virtual Machines.