Don't you think this doesn't worth noticing the new versions of firefox are coming out like hen's egg just a new feature and the mozilla foundation releases a new version.
Think when we were using firefox 1 and there was a rumor for firefox 2 we were very excited every rums had the same news...
Despite of better security linux don't have enough softwares. and some softwares are very large like i once tried to download bit torrent client it was of about 50-60 MB and also windows is a user friendly OS so no tough work required.