Includes ability to record data to Blu-ray media.

Improves audio and video performance for streaming high definition content.

Enables the exFAT file system to support UTC timestamps, which enables files to be synchronised across time zones (more useful for Server 2008 than Vista).

Provides an improved power management policy that is up to ten percent more efficient than the original in some configurations (both on the server and the desktop), and includes the ability to manage these settings via Group Policy.

The graphics experience has been greatly improved for users, such as gamers, running applications that require a lot of graphics processing.

Adds new capabilities to DirectX Graphic display reliability.Bluetooth v2.1 is the most recent specification for Bluetooth wireless technology and Windows Connect Now (WCN) Wi-Fi Configuration. Integrates the Windows Vista Feature Pack for Wireless, which contains support for Bluetooth v2.1.The search engine in Windows Search 4.0 is a Microsoft Windows service that is also used by programs such as Microsoft Office Outlook 2007 and Microsoft Office OneNote 2007. It also helps find and preview documents, e-mail messages, music files, photos, and other items on the computer. Adds Windows Search 4.0, which builds on Microsoft’s search technology with improved indexing and search relevance.Adds support for the 64-bit central processing unit (CPU) from VIA Technologies, which adds the ID and vendor strings for the new VIA 64-bit CPU.While Service Pack 2 will no doubt be less of a required update than Service Pack 1 was, Microsoft's Mike Nash has said that the Windows Vista development team is committed to continually improving the operating system and, as a result, there is support for some new features:

According to the latest rumours, the release candidate for Service Pack 2 will be available in February 2009 and then the final version will be rolled out at some point in April. On Friday, Microsoft announced widespread availability of the Windows Vista Service Pack 2 beta through its Customer Preview Program ahead of its official release in the first half of next year. Windows Vista SP2 beta performance Manufacturer: Microsoft

Windows 7 home premium service pack 2