Well, as long as you are talking about Firefox 6, it’s actually possible. The Mozilla Foundation has taken up a new schedule of releasing new version of Firefox every six week. As a result of that, Firefox 6 will be officially available on Mozilla website this August 16. But they made the new version available to download via their FTP servers. If you want to be one of the early adopters, you can download Mozilla Firefox 6 following these links:
Since it’s a quick release, there aren’t many mentionable features on this new version. One thing you might start noticing right away is that the location bar now shows the root domain a little differently, which is already available in Google Chrome.
Try out the new version and let us know how you feel about it.