The wait is over. Windows Vista Service Pack 1 RTM is now available for download. Both the 32-bit and the 64-bit editions of the service pack are up for grabs. Microsoft confirmed the information leaked by Amazon.com at the end of the past week that Vista SP1 was going to be made available on March 18, 2008. And the Redmond company met the initially announced delivery schedule which pointed to mid-March ever since February 4, 2008 when the service pack was released to manufacturing. At this point in time x86 and x64 Windows Vista SP1 are both up for grabs either as standalone packages or through Windows Update.

"Windows Vista Service Pack 1 (SP1) is an update to Windows Vista that addresses feedback from our customers. In addition to previously released updates, SP1 will contain changes focused on addressing specific reliability, performance, and compatibility issues; supporting new types of hardware; and adding support for several emerging standards," reads a fragment of the Vista SP1 description.

Windows6.0-KB936330-X86-wave0.exe and the Windows6.0-KB936330-X64-wave0.exe downloads weigh in at 434.5 MB and respectivelly 726.5 MB, being tailored to integrate with both 32-bit and 64-bit Vista operating systems. As Microsoft revealed following RTM, only a select few languages are supported in the March release. The standalone version of Vista SP1 can be integrated exclusively with copies of Vista RTM with these language versions: English (US), French, German, Japanese, or Spanish (Traditional).

"Today, you can now download Windows Vista SP1 via Windows Update. For those of you eager to receive the benefits of Windows Vista SP1 - you can now do so! We've seen quite a bit of questions in our comments so we want to communicate as much as possible surrounding Windows Vista SP1 and today's release to Windows Update as we can," stated Nick White, Windows Vista Product Manager. "Those of you who find that SP1 isn't offered over Windows Update even after updating all your drivers, but would still like to download it can access our "standalone installer" from the Microsoft Download Center."

Windows Vista Service Pack 1 Five Language Standalone for both 32-bit and 64-bit versions of the operating system is available for download HERE.