Internet Explorer 9

Well, IE 9 has been released for over 24 hours, and it got 2.3 million downloads in the first 24 hours.IE 9 is only available in Windows 9 and Vista. ( Unfortunate for you XP and older users ).

The 2.3 million pales in comparison to firefox though, which accumulated 8,002,530 downloads over the first 24 hours

IE 9 boasts quite a lot of features which can be found here

Though from all those features, I find these ones to be the most useful:

1. Tracking Protection
Tracking Protection helps you stay in control of your privacy as you browse the web. Some of the content, images, ads, and analytics that you see on the websites you visit are provided by outside or third-party websites. While this content can provide value to both you and your favorite websites, these third-party websites have the ability to potentially track your behavior across multiple sites. Tracking Protection provides you an added level of control and choice about the information that third-party websites can potentially use to track your browsing activity. With Tracking Protection Lists, you can choose which third-party sites can receive your information and track you online. By adding a list, you can block content from websites that might have an impact on your privacy. When you add a Tracking Protection List, Internet Explorer will prevent your information from being sent by limiting data requests to websites in the list. For each list that you add, the setting applies across all pages and websites you visit, not just the pages you get the lists from. And each time you begin a new browsing session, the blocking stays on until you decide to turn it off.
2. Add-on Performance Advisor
Add-on Performance Advisor works by identifying add-ons that may be slowing down your browser and—right from the notification area—giving you the information you need to disable the add-on or fix the problem. Load times for each add-on are shown so you can see how each one impacts your browsing experience. You’re able to make an informed decision to use the add-ons you find valuable and disable those that are less useful or too slow. It all adds up to browsing that's faster and more efficient for you.
3. Integration with Windows 7
You can pin sites to your Windows taskbar. And a couple more features in integration with Windows 7 are : Snap Snap makes it easy to view two websites at the same time Whether you're comparing menus for restaurants on different websites, watching a video while going through email, or looking at a map while reading an itinerary for a trip, it often takes more than one webpage or window to accomplish a task. Snap is a quick—and fun—way to show two sites or pages on your screen at one time. Simply drag each one to opposite edges of your screen and the sites will appear side-by-side. Content on the sites is rendered continuously and video frames remain when snapping a window in place, providing a fluid experience. And you’re able to see more content at one time without having to waste time thinking about whether to use tabs or windows. Jump Lists Jump Lists make it easy to access your favorite sites A quick and easy to way to get to your favorite websites without having to open Internet Explorer, Jump Lists take you right to the websites you use every day. To open the Internet Explorer 9 Jump List, right-click the Internet Explorer icon on the taskbar. You’ll see the sites that you visit often. There’s also quick access to start InPrivate Browsing, open new tabs, or close a window. Any website that you’ve pinned to the taskbar has a Jump List, too. What you see in each one depends on the website, but all of them include InPrivate Browsing, opening the site, unpinning the site, and closing the window. Thumbnail preview controls Some websites that are pinned to the taskbar have controls that can be accessed from the taskbar. Point to the icon for a website that's pinned to the taskbar and you'll see the thumbnail preview controls for that website underneath the thumbnail preview. Icon overlays Some pinned sites also have icon overlays, which provide information about the website. For example, the number of new messages are shown on the icon in the taskbar. That way you're kept up-to-date about new information without having to go to the website.

Want to download IE 9? Just go to the official site!