The Microsoft Team created an official Knowledge Base article for 2012 Failover cluster. For windows 2012, there are couple good TechNet wiki articles regarding the hotfixes released for HyperV and
With Windows 2012 Failover cluster we have now option to “Drain Roles”, in which all VMs on the host gets migrated to other nodes and the drained host gets paused.
Ask Premier Field Engineering (PFE) Platforms blog has a new post listing best practices for Windows Server 2012 Hyper-V deployments. It has great information and strongly suggest you to read