The latest Firefox 4 Beta is now available to download and test. We’ve continued our work to improve performance and stability, while also implementing a “Do Not Track” privacy feature to provide more control over online behavioral tracking.

The Web is evolving quickly and so are the ways that your data is collected, shared and stored. With the integration of the “Do Not Track” option into Firefox 4 Beta, you can now check a “Do Not Track” box in the “Advanced” screen of Firefox’s Options. When this option is selected, a header will be sent signaling to websites that you wish to opt-out of online behavioral tracking. You will not notice any difference in your browsing experience until sites and advertisers start responding to the header.

You can read more about behavioral tracking in this post from Mozilla Privacy Lead, Alex Fowler. For more information about the technical implementation Do Not Track, check out this post from Sid Stamm, Mozilla security and privacy engineer.

We couldn’t do this without the help of our millions of beta testers and their feedback, which we welcome as we continue to improve and polish Firefox 4 Beta to ensure we deliver an awesome experience to our 400 million users around the world.

For more information:

· Download Firefox 4 Beta

· Learn more about the features

· Submit your feedback

· Short, to the point FAQ

· Long, technical release notes