With Vista, Microsoft promises increased security with an improved firewall and Windows Defender and User Account Control. Other fresh additions include integrated desktop search, Internet Explorer 7.0, Windows Sidebar, Windows Sideshow, built-in system diagnostics, improved gaming support, fully integrated Speech Recognition as well as support for Windows SuperFetch, Windows ReadyBoost and Windows ReadyDrive.

Windows Vista will be available in four distinct retail versions:

• Windows Vista Home Basic, $199/$99.95 (full/upgrade) - Provides a basic platform for home users who want to keep tabs on email and Internet activity. Comes standard with Vista's new Search Explorer, Sidebar and Parental Controls.
• Windows Vista Home Premium, $239/$159 - Builds on Home Basic by adding the Windows Aero interface, Windows Media Center functionality, Windows Tablet PC technology and integrated DVD burning.
• Windows Vista Business, $299/$199 - Supports the Aero user interface, offers improved document managing and Windows Tablet PC functionality.
• Windows Vista Ultimate, $399/$259 - Vista Ultimate combines the functionality of Vista Home Premium and Vista Business.