The Release Candidate for Microsoft Hyper-V Server 2008 R2 is available for download now. This version allows free live migration of virtual machines and offers host clustering /high availability for free as well.
In the article below Microsoft once again puts the attention to this free edition and compares it to the cheapest edition of VMware offering vMotion and HA. Quite a difference in costs. I am very curious how the small and mid-size market will respond to the R2 release.