Vista Service Pack 2 released
Microsoft released Service pack 2 for Vista and Windows Server 2008 yesterday. Service pack 2 adds support for new hardware and includes all hotfixes and security updates released since SP1. To install SP2 you need to have SP1 installed in your system. See below for original description and release notes. Currently SP2 is available as a five language standalone package.
Overview
Service Pack 2 for Windows Server 2008 and Windows Vista (SP2) is an update to Windows Vista and Windows Server 2008 that supports new kinds of hardware and emerging hardware standards, and includes all updates delivered since SP1. SP2 simplifies administration by enabling IT administrators to deploy and support a single service pack for clients and servers. Please see the Windows Server SP2/Windows Vista SP2 page on TechNet/MSDN for additional details and documentation.
SP2 is an update to Windows Server 2008 and Windows Vista that incorporates improvements discovered through automated feedback, as well as updates that have been delivered since SP1. By providing these fixes integrated into a single service pack for both client and server, Microsoft provides a single high-quality update that minimizes deployment and testing complexity for customers.
Service Pack 1 is a prerequisite for installing Service Pack 2. Please make sure that your system is running Service Pack 1 before you install Service Pack 2.
Windows Vista SP2 RC Released to public
Original Site Description
Windows Vista introduces a breakthrough user experience and is designed to help you feel confident in your ability to view, find, and organize information and to control your computing experience. The visual sophistication of Windows Vista helps streamline your computing experience by refining common window elements so you can better focus on the content on the screen rather than on how to access it. The desktop experience is more informative, intuitive, and helpful. And new tools bring better clarity to the information on your computer, so you can see what your files contain without opening them, find applications and files instantly, navigate efficiently among open windows, and use wizards and dialog boxes more confidently.
Windows Server 2008 SP2/Windows Vista SP2 RC is prerelease code offered to the public through our Customer Preview Program. Please see the Windows Server SP2/Windows Vista SP2 Customer Preview Program page on TechNet/MSDN for additional details, documentation, and forums.
Windows Server 2008/Windows Vista SP2 RC apply to people, organizations, and technical enthusiasts who are comfortable evaluating prerelease software. This prerelease software is provided for testing only. Installation of Service Pack 2 Beta will result in Microsoft collecting information about the installation process, even if the installation is not completed. We do not recommend installing this software on primary or mission-critical systems. We recommend that you have a backup of your data before you install any prerelease software.
Installing Vista Service Pack 2 (SP2) KB948465
Well the latest build of the vista SP2 (build number 6002.16497) is out, I know that a lot of you will be wanting to upgrade and some of you might be scared that it may ruin system stability (and with the history of Microsoft Betas, your fears are justifiable) but do not worry as I have tried it and it installs fine. SO I decided to make a small guide on how to install it without getting into a trouble spot.
Before even thinking of adding the registry patch using our script (see below), backup your System Drive (in most cases the C: drive) first.

