Although Microsoft doesn’t normally deliver support for pre-release software, there are exceptions to this rule, and an update designed to resolve issues related to Taskbar functionality in Windows 7 Service Pack 1 (SP1) Beta and Windows Server 2008 R2 SP1 is an illustrative example in this regard.

The Redmond company also offers support for pre-RTM products when it comes down to patching Critical security vulnerabilities that would put users at risk from attacks and exploits.

However, the update released in the second half of August 2010 is not intended to patch a security flaw.

Instead “this update addresses an issue in which the thumbnail controls for some applications are not displayed on the taskbar. After you install this update, you may have to restart your system,” Microsoft stated.

According to the little information provided by the software giant, the refresh is capable of enabling “the thumbnail controls of certain applications to be displayed correctly on the taskbar in Windows 7 or in Windows Server 2008 R2.”

And although the company doesn’t mention Windows 7 SP1 Beta and Windows Server 2008 R2 SP1 Beta in the Knowledge Base article, the releases on the Microsoft Download Center reveal that early adopters running the public Beta of the first upgrade for the two platforms should also deploy the update.

Windows 7 SP1 Beta was released to testers in the first half of July 2010, and continues to be available for download to the public.

As it released Windows 7 SP1 Beta, Microsoft made it clear that it planned to wrap up and deliver the RTM bits of the service pack in the first half of 2011, most probably in the first quarter of next year, rather than by the end of 2010, as previously speculated.

Following the release of Windows 7 Service Pack (SP1) Beta Build 7601.16562.100603-1800, work on the upgrade continued, with Microsoft having reportedly released a new interim version of the service pack to TAP and OEMs.

The software giant confirmed that Windows 7 SP1 Beta Refresh Build 7601.17077 indeed shipped to a select pool of testers.

Windows 7 Service Pack (SP1) Beta Build 7601.16562.100603-1800 is available for download here.

Here are the download links for KB2259539:

All supported x86-based versions of Windows 7

All supported x64-based versions of Windows 7

All supported x64-based versions of Windows Server 2008 R2

All supported IA-64-based versions of Windows Server 2008 R2

Having backported a number of key Windows 7 technologies, including DirectX 11 from Windows 7 to its predecessor, Microsoft is now offering users of Windows Vista Service Pack (SP2) a platform update supplement. The recently released Platform Update Supplement Beta for Windows Vista is obviously designed to catalyze the evolution of the Platform Update for Windows Vista. According to the Redmond company, the supplement is in Beta stage at this point in time, so end users should not install it yet, and leave the testing to early adopters familiar with running pre-release software.

“A beta release of the Platform Update Supplement for Windows Vista is available. This update provides fixes and improvements to graphics, media foundation and print functionality in Windows Vista Service Pack 2 (SP2),” Microsoft stated.

Microsoft also enumerated the changes delivered by the Platform Update Supplement, including More »