Even before the start of Microsoft's "Beauty of the Web" press event due to start in under 30 minutes from now, you can download and try out the very latest version of Internet Explorer.
On Microsoft's IE9 Beta micro site they are claiming new features like hardware acceleration, a cleaner UI putting focus on the web, seamless integration with Windows 7 and of course HTML5 support.
I am downloading the beta now and it would seem like plenty of pressure is being applied to Microsoft's servers right now. As I type the download just finished and it says Internet Explorer 9 is now installed and I need to reboot now before I can use. I'll report back with some screenshots shortly.