The OpenNebula project has just announced the availability of OpenNebula 3.6 (Lagoon). This release is focused on stabilizing the features introduced in OpenNebula 3.4, improving the performance of some existing features, and adding new features for virtualization management and integration with the new OpenNebula Marketplace.
OpenNebula 3.6 features a new hotplug mechanism for disk volumes that supports attaching either volatile volumes or existing images to a running VM. Also for OpenNebula 3.6 we have re-written from scratch the Quota and Accounting tools, so now they are included in the OpenNebula core to enhance their integration with the existing AuthZ & AuthN mechanisms and other related tools (e.g. Sunstone). There are some other new features like VM rescheduling, hard reboots, cloning of disk images, support for per-cluster definition of system datastores, etc.