Microsoft just launched the Beta version revision 8 of Internet explorer which can be downloaded from
http://www.microsoft.com/windows/internet-explorer/beta/

Its full of cool features like:

1.Private IP sessions to hide your content views from others. Do you want to be better protected from phishing and malicious software downloads? Need to browse with more privacy for that special gift online? Concerned about identity theft and your privacy? The latest version of Windows Internet Explorer has been designed to address these potential threats and more.

2. Search Searching for information is the most commonly performed task on the web. With Internet Explorer 8, you’ll see results show up instantly as you start typing in the built-in search box; these results will become more accurate each time you type a letter.
This function will be supported by a wide variety of search providers including Windows Live™, Yahoo! and Google.

3. With Search Suggestions, now you can type a search term and see real-time search suggestions from your chosen search provider, recommending common searches related to the text that is typed. Click on a suggestion at any time to immediately execute the search. The process saves time and results in more relevant search findings.

4. Along with its ‘Visual Search’ and ‘Live Search’ functions, Microsoft  has partnered with top search content providers like Wikipedia, Yahoo, Amazon, and come to deliver immediate results with a search term now.

For example, now by typing “Seattle weather” with Live Search, you will instantly get a preview of the current weather in the Search Box drop-down.