We already posted the main features of OpenNebula 3.6 Beta, which are of course fully supported by Sunstone. But we have been working also on the Sunstone visual appeal, and we will keep polishing the interface for the final release. Here are some preview screenshots:
Similar dashboard for Clusters
Host Monitorization Graphs
User Quota Management
You can request an account in our Demo Cloud and enjoy them, stay tuned for the final release!