This morning, Apple made available Safari 3.1 claiming...
Safari loads web pages 1.9 times faster than IE 7 and 1.7 times faster than Firefox 2. Safari also runs JavaScript up to six times faster than other browsers, and is the first browser to support the latest innovative web standards needed to deliver the next generation of highly interactive Web 2.0 experiences
While this may be true, it's not as interesting as the fact that Safari is the first browser to support the new video and audio tags in HTML 5, the first to support CSS Animations and also supports CSS Web Fonts.

For those who are less about building cool website and more about worrying about secure web browsing, Safari 3.1 also offers a host of security updates.

If you were losing sleep at the thought that visiting or using Web Inspector on a maliciously crafted website may result in cross-site scripting or may lead to an unexpected application termination or arbitrary code execution, you can now rest easy--Safari 3.1 fixes that.

Worried that using Kotoeri reverse conversion on a password field might display your passwords words to anyone looking over your shoulder at Starbucks? Safari 3.1 addressed that issue. (What the heck is Kotoeri reverse conversion anyway?)