Mozilla刚刚推出Firefox 3.1 Beta，先前的版本是3.03，此次Beta已经有所有平台的版本。
基本特性有：
1. Web standards improvements in the Gecko layout engine
2. Added support for CSS 2.1 and CSS 3 properties
3. A new tab-switching shortcut that shows previews of the tab you're switching to
4. Improved control over the Smart Location Bar using special characters to restrict your search
5. Support for new web technologies such as the <video> and <audio> elements, the W3C Geolocation API, JavaScript query selectors, web worker threads, SVG transforms and offline applications.
下载地址：http://www.mozilla.com/en-US/firefox/all-beta.html(中国分别在列表第8，9行)