If you do any web-related development and you haven't already got it - now is the time to download IE8 (now available as release candidate 1) and check for compatibility with your existing sites. You can get it at the Internet Explorer home page.

They also have a marketing summary of some of the new features (folks are really liking the Accelerator and Web Slice features). However, to get an even better overview of the new features and the interoperability changes, check out the IE8 Team blog.