Hi All :
Windows 8 and windows Server 8 beta version is released , virtualization still a key update feature .
From Windows Server 8 developer preview to comsumer preview , Hyper-V have two highlighted scalability updates :
In addition, these scalability metrics lead the industry:
You can find newest update information from this blog post : http://blogs.technet.com/b/justin_gao/archive/2012/06/01/you-need-to-know-windows-server-2012-hyper-v-scale-updates.aspx