In February this year, Microsoft released Service Pack 1 for Windows Server 2008 R2 and Windows 7, introducing Dynamic Memory for Hyper-V and RemoteFX for Remote Desktop Services (RDS) features. Besides providing Hyper-V as a role in Windows Server Microsoft also provides a free stand-alone version version of its hypervisor, comparable with the VMware ESXi hypervisor and Citrix XenServer in the OEM pre-installation options.
Today Microsoft released a new version of Hyper-V Server 2008 R2 with Service Pack 1 containing the same virtualization feature set as the Hyper-V role in Windows Server 2008 R2 SP1.
Thanks to Hyper-V.nu for providing the news.