NO VIRUS BLOG

Firefox 3.1 Beta 3 is based on the Gecko 1.9.1 rendering platform, which has been under development for the past 9 months. Firefox 3.1 is an incremental release on the previous version with significant changes to improve web compatibility, performance, and ease of use:

• This beta is now available in 64 languages - get your local version.
• Improved the new Private Browsing Mode.
• Improvements to web worker thread support.
• Improved performance and stability with the new TraceMonkey JavaScript engine.
• New native JSON support.
• Improvements to the Gecko layout engine, including speculative parsing for faster content rendering.
• Support for new web technologies such as the <video> and <audio> elements, the W3C Geolocation API, JavaScript query selectors, CSS 2.1 and 3 properties, SVG transforms and offline applications.

Developers can find out about all the changes and new features at the Mozilla Developer Center.

資料來源：http://www.mozilla.com/en-US/firefox/3.1b3/releasenotes/