All the good stuff happens while I am on vacation. Firefox 5 was released last week and PC World has the story.
If you read some of the linked stories, you will see that Firefox is moving toward the Google Chrome update model. Chrome updates the browser all the time in the background. A change from version 8 to version 9 is completely invisible to the end user.
For most users, this is a good thing as upgrading a piece of software is quite a chore. Not sure how this will play with IT departments.
Five Good Reasons to Download Firefox 5 | PCWorld Business Center