This early release of Windows 7 and Windows Server 2008 R2 SP1 Beta. The SP1 Beta does not provide new end-user features, and installation is not supported by Microsoft.
Windows 7 and Windows Server 2008 R2 SP1 Beta helps keep your PCs and servers on the latest support level, provides ongoing improvements to the Windows Operating System (OS), by including previous updates delivered over Windows Update as well as continuing incremental updates to the Windows 7 and Windows Server 2008 R2 platforms based on customer and partner feedback, and is easy for organizations to deploy a single set of updates.
As we had already told you that SP 1 Beta will not contain any kind of big change or any new features,Its just contain updates and hot fixes.
You may Download this SP 1 Beta from belows link:-