Fire fox 3.5 version is released with some good features such as private browsing(which is already implemented in IE and Chrome some long time back). Here are the features which is new to FF3.5

  1. Private browsing
  2. Tab tearing
  3. HTML5 support
  4. Forget this site
  5. Geo-location

I see most of the features are brought from Chrome.. What you say people?
And here is the link to download Latest Firefox browser