read more about it here
link:
http://www.microsoft.com/windows/pro...8/default.mspx
key note
Internet Explorer 8 Beta 1 (Developer Preview)
Welcome to the website for Internet Explorer 8 Beta 1. Internet Explorer 8 Beta 1 is a developer preview for web designers and developers to help prepare their websites for the launch of Internet Explorer 8. Some of the new features designed for developers include a developer toolbar and improved interoperability and compatibility.
Internet Explorer 8 is designed to work in standard mode out of this box. However, Microsoft provides a way for users to browse the web in a way similar to Internet Explorer 7 by using the emulate Internet Explorer 7 button on the chrome. Learn more.
The web at your service
Internet Explorer 8 will take the web experience beyond the page. Internet Explorer 8 introduces a new way to seamlessly experience the best of the web whether you are a web developer writing to standards or a user discovering a new online service. Be one of the first developers to take advantage of improvements in Internet Explorer 8 for your websites and applications. Learn more.
anyways good to know something is in the works
keep inmind this is more for web developer!
for end users none developers wait till they release the full version to the public.