Internet Explorer 8

A new version of the IE was released in early March 2009. So the new features of the IE 8 are :

• Accelerators
• Enhanced Navigation
• Increased Performance
• Improved Favorites and History Management
• Instant Search
• Web Slices

for more details refer : http://www.microsoft.com/windows/internet-explorer/features/overview.aspx?tabid=1&catid=1

you can download the IE 8 from here : http://www.microsoft.com/windows/internet-explorer/default.aspx

refer this article also : Duplicate IE 8 Features in Firefox 3