Lately, I have been hard at work on my next book which will discuss VMware-to-Hyper-V migrations. The writing has kept me so busy that I haven't had a chance to weigh in on the new Hyper-V preview. That being the case, I wanted to take this opportunity to share my initial thoughts.
My initial impression of the Hyper-V preview is that Microsoft seems to have a different goal than they had with Windows Server 2012 and 2012 R2. Back then the goal seemed to be to add an overwhelming number of features to a previously sub-par hypervisor in order to make it a legitimate alternative to VMware. The new release preview seems to be less about introducing new features and more about laying the ground work for the future.
Admittedly, what we have right now is a preview release. Microsoft could easily add features prior to the actual release. My guess, however, is that they are laying the groundwork in the Windows Server 10 time frame and we will probably see that groundwork put to good use in the Windows Server 10 R2 time frame.