While the DotD usually tosses out a neat utility, yesterday’s release of the first Firefox 3.1 beta just begged us to make it our feature download.

Here are the list of new features:

• Gecko — the browser’s rendering engine — enhancement
• TraceMonkey and SpiderMonkey for faster-than-Google-Chrome Java
• Support for CSS 2.1 and CSS 3.0 properties
• New tab preview/switching hotkey.
• Improved control over the Smart Location Bar (aka the “Awesome Bar”) using special characters to restrict your search
• Support for page-embedded OGM and OGG without plugins.
• Geode, the W3C’s geolocation plugin
• JavaScript query selectors, web worker threads, SVG transforms and some offline application support

For a look at the new tab preview pane and the improved Awesome Bar, check out our lightning review of the Firefox 3.1 alpha. Beware of bugs!

Download: Windows
Download: Mac OS X
Download: Linux