On Monday, Tami Reller, Corporate Vice President of Windows & Windows Live announced the availability of first public beta of Windows 7 SP1 and Windows Server 2008 SP1 at annual Worldwide Partner Conference (WPC).

The Windows 7 SP1 and Windows Server 2008 R2 SP1 Betas are concurrent releases and packaged together in a single download for a more streamlined and cost effective deployment.  Businesses can begin realizing the advancements of the Windows Server platform for virtualization through two key features:  Dynamic Memory and RemoteFX.

Dynamic Memory Windows Server 2008 R2 Hyper-V introduces a new feature, called Dynamic Memory, in the Windows 7 SP1 and Windows Server 2008 R2 SP1 Beta releases.  It allows customers to achieve increased density when they’re consolidating physical servers into a virtual realm, providing them with predictable performance and linear scalability.  With Dynamic Memory, IT administrators are able to pool available memory on a physical host and then dynamically dole that memory out to virtual machines running on the host, based on current workload needs.

RemoteFX A key feature of Remote Desktop Services (RDS) lets IT administrators deliver a rich graphics experience to end-users through virtualized desktops.  Using new protocol enhancements between Windows Server 2008 R2 and Windows 7, end users can now access virtual machines on a wide variety of target devices and still get a rich graphics experience with server-side graphics processing.

A beta build of Windows 7 has already made available to testers earlier this month which was compiled on June 3 with the number 7601.16562.100603-1800. To download beta bits of Service Pack 1, visit on TechNet Evaluation Center page.