Internet Explorer 9 Beta - Available for Windows 7 and Vista
Individuals with advanced technical skills are the best candidates for testing this first beta version of Internet Explorer 9.
Internet Explorer 9 Beta - Home Page
Internet Explorer 9 Beta - Key Features
QUOTE: The wait is over for the newest beta version of Microsoft’s browser, Internet Explorer 9. Starting on September 15, 2010 (PDT), users will be invited to download this newest test version.
Internet Explorer 9 Beta is compatible with Windows Vista SP2 and Windows 7 PCs. It is not available for earlier versions of Windows Vista or with PCs running Windows XP.