Microsoft Launches First IE9 Developer Preview with Support for Hardware-Accelerated HTML5. It is available for download from www.IETestDrive.com.
Direct Download Link: http://download.microsoft.com/download/7/F/D/7FD512A8-026C-4388-B598-D763185249CF/iepreview.msi
Size: 14.2MB
System Requirements:
Windows 7 (x86 or x64) or Windows Vista SP2 (x86 or x64).
FAQs:
http://ie.microsoft.com/testdrive/info/FrequentlyAskedQuestions/Default.html