The version in the story is Firefox nightly aka Firefox 8.
There are many changes from Firefox 5 to 8. Since they adopted the rapid release, Firefox 8 won't take forever to be stable, but it will still take a few month.
I'm much aware of their recent release schedule changes, I just hope that they are not sacrificing stability for increased version release. Firefox used to be about testing and stability rather than who has the bigger version number.
4 was an insult to me, crashing all the time and so slow, pathetic in the terms of a browser, I would have rather used IE for a couple of months whilst that was released and that's saying something
I wish mozilla would make web pages for these new versions. The top search result for "Firefox 8" is the 1.0.8 release notes, followed by a "download free download" link that is definitely not mozilla.com.
