Originally posted 2008-10-16 13:25:28.
Mozilla’s Firefox team is busy readying the Firefox 3.1 for final release by releasing public beta versions. We have seen Firefox 3.1 beta 1 hit the streets and 3.1 beta 2 are already available in the nightly builds.

If you are wondering about the new features to be available, here they are:
- New tab-switching that shows tab previews
- Drag a tab to a new window
- Web standards improvement in Gecko layout engine
- Added support for CSS 2.1 & CSS 3 properties such as @font-face
- Improved control over Awesome Bar – you can use special characters to restrict search
- Support for new web formats such as <video> and <audio> elements and the W3C Geolocation API – did you read my Geode review?
- Super-fast TraceMonkey – the new javascript engine (not enabled by default)
If you are a web developer, you can see the details of these new features at Mozilla’s Web Tech blog.
How to enable TraceMonkey
TraceMonkey is not enabled by default in Firefox 3.1 beta 1 but you can easily enable it in about:config.
- Open about:config by typing that in the location bar
- Set javascript.options.jit.content to true
Some of the features set to be included in the final release of Firefox 3.1 like Smart Session Restore, Private browsing (yea, that’s the one with the overused term – porn mode), etc aren’t here yet in the beta versions.
Which of these features get you excited?
Download Firefox 3.1 beta1
Update: 03/13/09 – Firefox 3.1 Beta 3 is available for download now!
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