Microsoft is rolling out new beta builds of various virtualization, management and mid-size server wares. System Center Virtual Machine Manager 2008: On April 29, Microsoft delivered a public beta of System Center Virtual Machine Manager 2008 (creatively code-named "Virtual Machine Manager vNext"). The new SCVMM release will allow admins to centrally manage their physical and virtual assets from a single application. Virtual assets which will be manageable by the new release include Windows Server 2008 Hyper-V (which is still in beta); Microsoft Virtual Server 2005 R2 and/or VMware ESX Server, according to Microsoft. System Center Operations Manager 2007 Cross Platform Extensions: Also on April 29, Microsoft unveiled a public beta of System Center Operation Manager 2007 Cross Platform Extensions. Microsoft...