You can grab it here - Internet explorer 8 RC1.
If you are running a beta of Windows 7, don't download from the link above. There will be a separate refresh of the IE8 for Windows 7.
Internet Explorer 8 RC1 is much faster than previous versions of Internet Explorer, which you will notice right away. You will also notice some cool new features that will make your surfing experience faster, easier and a whole lot safer.
· Highlight a street address in your Hotmail, Yahoo Mail, or other web mail account, right-click on the blue button that appears, and hover over “Map with Live Search.” Presto! You’ll see the map with the location right there—no more copying and pasting street addresses from web mail to a mapping site. Plus, you can choose what mapping service you want to use.
· Go to the search box in the top right, and type a search item—see how the enhanced Instant Search Box is more helpful, providing real-time search suggestions, including images, from your chosen search provider.
· Click on a new tab, and see the options that are presented there, including “InPrivate Browsing.” Click InPrivate Browsing and watch what happens—you are now in a browser session that is leaving no trail behind, so research gift suggestions for your significant other to your heart’s content without worrying about who might pick up the crumbs after you. Personally, I am going to use this so the wife doesn't see all of the World of Warcraft sites I am reading up on! (she hates that games....)
Harder to see are the many security enhancements that will help keep you protected against the ever-evolving online threats—things like protection from cross-site scripting attacks that no other browser offers. You can read more about all of these features at the IE8 Features site.