The latest version of Mozilla's popular open source Web browser is due less than two months after the release of Firefox 5.

One of the biggest changes is that domain names will be tinted with a small highlight in the browser, which will make it easier to see what website users are on. Starting up Firefox 6 is faster because it lets users choose whether they want to load all the tab groups or not.

Linux users will also benefit from a performance boost with this latest version of the browser. Firefox 6 also features an improved version Web Console, reported PCMag.com .

Other changes include a new permissions tool. Users of Firefox 6 can set site-specific permissions for saved passwords, popups, cookies and more, reported ZDNet.com .

Mozilla's fast-paced release schedule lists Firefox 7 coming up on Sept. 27, Firefox 8 on Nov. 8 and Firefox 9 on Dec. 20, reported ComputerWorld.com .

Fans of Firefox discovered Monday that they could access version 6 a day before the official release date. Mozilla, which makes Firefox, placed the installation files on its FTP site, where early users could download and install Firefox 6.

However, a Mozilla spokesperson told VentureBeat that the version available Monday was not final.

"As part of Mozilla's open source development process, we post our builds publicly for testing and verification," the spokesperson said. "While we appreciate everyone's excitement about the Firefox release, these builds are currently not final and are still going through QA testing."

To download Firefox 6 .