It's nearly half a year late, but the final beta of Firefox 3 is now available. This is classed as code complete, apart from minor fixes and the removal of debug code, before the final release. We'll see more than one release candidate made available before the final release, which is now scheduled for June.
Firefox 3 beta 5 isn't massively different from the previous beta. There are a few new visual tweaks and improved security. For instance, the new version of Firefox will integrate with your anti-virus software so it will automatically check through the download to make sure that it is safe to install. There is built-in web forgery page checking, so the browser will attempt to detect if the website you're visiting is legitmate, rather than a fake version.
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