Firefox 3.1 Beta 1 Now Available

Firefox 3.1 Beta 1 is the third development milestone and first beta release of Firefox 3.1, the upcoming version of the Firefox web browser. While the release is stable, it is intended for Web developers and members of our testing community for early evaluation and feedback. Users of the latest released version of Firefox should not expect their add-ons to work properly with this beta.

What’s New in Firefox 3.1 Beta 1
Firefox 3.1 Beta 1 is based on the Gecko 1.9.1 rendering platform, which has been under development for the past 6 months. Gecko 1.9.1 is an incremental release on the previous version with significant changes to improve web compatibility, performance, and ease of use:

* Web standards improvements in the Gecko layout engine
* Added support for CSS 2.1 and CSS 3 properties
* A new tab-switching shortcut that shows previews of the tab you're switching to
* Improved control over the Smart Location Bar using special characters to restrict your search
* Support for new web technologies such as the