As usual Mozilla is making a whole lot of stupid and completely forgettable comparisons as to why their offering is better than the new Internet Explorer, but ignoring those it does have some new features that’s worth mentioning by ripping promo text straight off their site:
The Fastest Firefox Yet
Things move quickly online, and we’ve beefed up the engine that runs Firefox to make sure you can keep up: Firefox 3.5 is more than twice as fast as Firefox 3, and ten times as fast as Firefox 2.* As a result, Web applications like email, photo sites and your favorite social networks will feel snappier and more responsive.
More Ways to Keep You Safe
Keeping you safe while you surf is our top priority, which is why we’ve upgraded our anti-phishing and anti-malware technologies and have added private browsing and “forget this site” options to ensure your privacy.
Plus, our open source security process means we have experts around the globe working around the clock to keep you (and your personal information) safe.
One Size Doesn’t Fit All
Everybody uses the Web differently, so why should your browser be exactly like the next guy’s? Whether you’re into chatting, cooking or coding, Firefox has more than 6,000 add-ons to help you customize it to fit your exact needs.
Advancing the Web
We’ve been working hard to make sure Firefox 3.5 brings you the best of the modern web. With new features like private browsing, tear-off tabs and enhancements to the Awesome Bar, plus major performance enhancements, you’ll enjoy life on the cutting edge.
Related link: http://www.mozilla.com/en-US/firefox/upgrade.html