The new schedule means that Beta 7 has been delayed till early November. Meanwhile, assuming everything goes according to plan, Beta 8 is set for November 12, Beta 9 is expected on November 26, and Beta 10 should arrive on December 10. "The frequent beta releases have been extremely helpful in identifying compatibility issues with existing web content, so we plan on continuing to release beta milestones through the end of December. Our estimate is now that release candidate builds will ship in early 2011, with a final release date close behind. Please note that, as always, this schedule is subject to change based on feedback from users and community members."
Firefox 4 was originally supposed to be released in June, but Mozilla keeps making changes to the browser. Currently, Firefox 4 is at Beta 6. Many believe version 4.0 is the only thing that can save the browser from a stagnating market share.